Myles Apparel Momentum Short 2.0

Myles Apparel is one of the many companies making performance men’s activewear. They stand out from the pack with some great synthetic pieces including the Momentum Short 2.0, also available with liner (we also previously reviewed their Everyday Short).


The fabric is 85% nylon, 15% spandex (the heather colors are 53% nylon, 35% polyester, 12% spandex) with (slight) four-way stretch and a DWR treatment. The material is a perfect weight, not so light that it doesn’t look right and not so heavy to be stiff.

The pockets are made of a mesh material (in the signature Myles green) that is lightly perforated with small holes. This probably wouldn’t drain water too quickly, but keeps the pocket material from hindering the breathability of the shorts.

Fit and Finish

These shorts come in two lengths, Short (6”) and Standard (8”). I have the Standard length and find them to be perfect for working out. The size guide is spot on for picking the correct size (it contains actual garment measurements).

I find the elastic to be very comfortable, the waist band is a good width so it never feels like it is cutting into your skin. The overlapped side split helps make up for the lack of stretch, as it lets the leg openings of the shorts get out of they way when you need them to. The gusseted crotch also helps keep things comfortable.

The front pockets are nice and deep (they hold my iPhone X with no risk of it falling out, and would probably do OK with a Plus as well). There is also a small, zippered pocket to the back of the side seam. Myles calls this a “Hidden Media Pocket”. I’m not sure why it’s named that, because it’s far too small for a phone, but it works perfectly for a key (or a few).


These shorts perform perfectly for me. I’ve worn them for everything from kettlebells to rowing to yoga and find them extremely comfortable and without any spots that bind. The overlapped side split makes up for the less than expected stretch and the pockets are plenty deep. Most importantly, these shorts never feel wet when working out. Incredibly, they also give me multiple wears (these are my only workout shorts that allow this). Hanging to air out between workouts has allowed me to wear them 3-5 times before they need a wash.


The Myles Apparel Momentum 2.0 shorts are now what I grab first for a workout. The comfort, combined with excellent wicking and odor resistance, make these shorts hard to beat.

Myles Apparel Momentum Short 2.0

Y Athletics SilverAir Crew Neck

Note: this item was sent to us for the purpose of review.

The Y Athletics SilverAir Short Sleeve Crew is a part of a new breed of synthetic work out shirts which attempt to be highly breathable while also being highly-odor resistant. The goal is to give you something which performs at the levels of merino wool, but has the durability of synthetics. I’ve now been testing this shirt for a little over two weeks, wearing it while I work out.

To start, this is a “Made in the USA” t-shirt with a unique material: 69% Nylon, 26% Polyester, 5% Metallic. The fabric is spun in Italy, and the ‘metallic’ is claimed to be silver. By adding silver, the shirt is said to be more odor resistant.

Smell, or lack thereof

I wore this shirt as my base layer for four workouts in a row before it started to smell — about the same amount of wears I get out of merino wool in the same scenario (also the same as the Pistol Lake Eudae fabric). I washed and hung the shirt to dry (it dries very fast) and wore it again for another five workouts and I still have not washed it again as I really cannot detect much smell.

I’m impressed. This shirt does live up to its claims of being odor resistant, and not just in the sense that you can wear it twice — it rivals the performance of merino, which is something I had yet to see out of a synthetic shirt.


Since this is a workout shirt, and is synthetic, it is made to fit close to the skin. It doesn’t fit me tightly overall, but it is also unlikely to get in your way when working. I also found it less staticky than most synthetic shirts this time of year.

Make no mistake, it’s still a synthetic feeling shirt so it doesn’t have the softness of merino (or Eudae), but rather the entire shirt is very smooth to the touch. That said, given that my workouts are rucking, and rucking is known to be hard on shirts, I am a big fan of having a synthetic shirt I enjoy wearing.

The shirt also has a venting system built in, in addition to the moisture wicking properties, where the shirt is basically mesh in spots. However, unlike with most mesh materials, this doesn’t cause the shirt to be see through in any way, but you can tell form a glance that there is this venting. It’s a bit like a bus with ads over the windows, you know it’s got a ton of holes in it, but you also aren’t really able to see through it.


At first glance I wasn’t won over by this shirt, then I wore it to work out and I quickly changed my mind. The thing about this shirt is that it very much looks like what it is: a work out shirt. Whereas most merino t-shirts and even the Pistol Lake shirt we reviewed can be passed off as a standard t-shirt in many situations, you won’t get that with this shirt. What you will get is quite possibly the best workout shirt I’ve had the chance to wear thus far — it looks like a workout shirt, because it’s a really good workout shirt.

Steve’s Thoughts

I agree with Ben’s assessments of this shirt. I was very surprised with it’s odor resistance being on par with merino. I also found the moisture wicking ability to be the best of any shirt I own. If this shirt didn’t look like a workout shirt, it would become my favorite all around tee (and it has become my favorite workout tee).

Y Athletics SilverAir Crew Neck

UnderFit V-Neck Undershirt

These shirts were provided for review by UnderFit.

Finding a comfortable undershirt with a deep enough neck that stays tucked in all day can be a challenge. UnderFit has been making undershirts since 2012 and has spent a lot of time refining the fabric, fit, and finish of their shirts.


The shirts are made with a custom fabric that is 95% Modal, 5% Lycra. The Modal gives the shirt its softness, temperature regulation, and moisture absorption (odor resistance) properties. The Lycra gives the shirt its slight stretch so it can comfortably fit close to your body. The fabric feels very soft and is actually quite thick. Surprisingly, I was able to get two wears out of a shirt — something that I would have never expected from a non-merino undershirt. This remained true even when I wore the shirt for a long day and got quite sweaty. One perk of the UnderFit fabric over merino is that you can wash and dry the shirts however you want.

Fit and Finish

The “fit calculator” on the UnderFit website makes it easy to pick a size. You put in your height and weight and are given your size. I was sent a few sizes to give a try, and I found the size provided by the calculator gave the best fit.

The shirts fit close to the body with an extra long length so they stay tucked in all day. I’ve sometimes found close fitting undershirts to be too constricting, but the stretch made this shirt extremely comfortable. The v-neck was also cut perfectly, I never felt that it was going to show above my shirt. The seams on the shirt are sewn so they remain flat and don’t feel abrasive, something that can’t be said for all undershirts, especially the points of some v-necks.

In addition to the white v-neck, I was also able to give the skin tone v-neck a try. When wearing a white shirt over a white undershirt, the undershirt often shows through. The skin tone fabric is meant to blend in with your skin and make the undershirt less noticeable. I found that the UnderFit skin tone did a good job solving this problem (I also find a light grey color to work similarly).


Like I mentioned above, I was able to get two wears out of a single shirt. While quite good for a non-merino shirt, this doesn’t beat my merino undershirt (Icebreaker Anatomica).

Being thick, the fabric is great for cool weather, but I’m not sure how comfortable it would be in the middle of summer. While the fabric does a good job wicking moisture, it might trap too much heat.


I was quite impressed with the UnderFit V-Neck Undershirts. They are very soft, fit close to the body, stay tucked in, and the stretch makes them very comfortable. The ability to get two wears is impressive, but the thickness could be an issue in the heat of the summer. While they will not displace my merino undershirt, I will certainly keep them in my drawer. If you are looking for a non-merino undershirt, UnderFit should be your top choice.

UnderFit V-Neck Undershirt

Outlier S140 One Pocket

I used to have the S120 No-Pocket Pivot shirt from Outlier, only selling it because the color was simply too dark for my liking and for versatility with how I dress. So when I saw this S140 One Pocket, merino wool, pivot-sleeve, shirt from Outlier, I snatched it up right away.

Outlier states the shirt is “100% Super 140 merino woven in Thailand with non-mulesed Australian merino” which doesn’t mean much to me reading it, but wearing it I can tell you it means “insanely soft and super comfortable”. At 200 gsm this shirt is heavier than the likes of most Wool & Prince button downs, but you hardly notice that when wearing it.

The big question: is it worth $198?


One of the biggest draws of merino wool is the inherent comfort you get from thermal regulation, but there’s simply more to the S140 than that. For starters, as mentioned above, the fabric itself is luxuriously soft. It’s not soft like a nice cotton dress shirt, it’s soft like a well broken in flannel shirt.

Add to the above the pivot sleeve — a design Outlier uses to allow greater range of motion in the shoulders, without adding stretch — and what you have is something that really moves with you. Put another way: this is my preferred shirt to fly in and wear around my house. It’s that comfortable.


Ok, so it feels amazing and is insanely comfortable, but how does it look? It looks fine, unless you need to have it look more formal than a flannel shirt — because the drape is all wrong. Whereas a merino button down like Wool & Prince has a crispness to the fabric, which allows it to wear as business casual, the S140 is too slouchy for that. It looks casual, and I’ve yet to be able to pull it off in a more business casual setting.

The softness simply comes at a price.

However, the design details of the shirt are great. The buttons, hidden buttons for the collar, and the overall cut of the shirt looks fantastic.

Durability Issue

I wore this shirt on a cross-country trip, and on the first leg I noticed that there was a pull in the yarn on the sleeve. I assume my backpack strap snagged it somehow and pulled it. I was able to mostly fix it with the needle and thread kit in the hotel (I pulled the loop back to the inside), but you can still see a minor run on the sleeve. You’d never notice it if you weren’t looking for it, but this does give me pause wearing this shirt in situations which require a bit more durability (namely, travel).


Back to the question then: is this shirt worth $198? That’s largely going to depend on where you need to wear it, but for me as someone who works from home and has two small kids around: worth it. I can look nice when I need to jump on a video call but be far more comfortable than most other people in any shirt with a collar.

When I first tried Outlier’s Ultrafine Merino T-Shirt, I understood what the fuss was over a $100+ t-shirt. It wasn’t that it was a really good or the best, merino wool t-shirt you could get — it’s that the UFT is the best t-shirt you can get period. The S140 is the best button down shirt you can buy, the only caveat being that it will only be a casual shirt. I’m quite fine with that.

Outlier S140 One Pocket

Columbia OutDry EX Featherweight Shell

The Columbia OutDry EX Featherweight Shell has recently come to our attention through a detailed comparison with other waterproof breathable (WB) jackets. This jacket is special in two ways: it has a very high moisture vapor transmission rate (MVTR) and it has no face fabric. The MVTR is important (and the author compares it to three other jackets), as it is a measure of the rate at which water vapor passes through a material (also referred to as breathability). The lack of face fabric allows the fabric to never “wet out” (this is when the face fabric is saturated with water). This will eventually happen with any of the various treatments used on face fabrics and greatly reduces the MVTR. The reason this decreases MVTR is that when the face fabric is saturated with water, it acts like it is 100% relative humidity (% RH) on the outside. In order for water vapor to pass from the inside of the jacket to the outside, the % RH has to be lower on the outside than inside. This is also the reason why if you are generating a lot of sweat and heat and it is humid out, you will feel like you are getting wet from the inside (the moisture can’t efficiently transfer from the more humid interior of the jacket to the exterior). The author maintains that while no current WB jackets breathe enough to be comfortable under exertion (like when backpacking), this is the best yet.


Steve’s Packing List: February 21st 2018

Trip Details: Overnight trip by car for a business meeting.

Packing List

I wore:

Notes and Considerations

While this might seem like a lot of clothes for an overnight trip, I could travel with this same list for a two or three night trip as well. At three or four nights, I’d probably throw in another pair of underwear, and at five or more, another pair of socks and another undershirt and button-down. This all packed well in my small Mystery Ranch Urban Assault pack, even with my large (size 13) gym shoes.

The only thing I’d change about this packing list would be a better bag for my toiletries.

Steve’s Packing List: February 21st 2018

Ben’s Packing List: February 1st 2018

Trip Details: 3 days, 2 nights, traveling across the country for business. This trip required the packing of a suit and flights with a tight connection on each way of the trip.

Packing List

I tried to pack lighter than normal for this trip as I wanted to fit it all in a GR1, and it turns out packing a suit in a GR1 takes up most of the space in the GR1.

I wore:

Notes & Considerations

This loadout, while relatively few in items, took up the entire bag and then some. I wanted to travel with nothing larger because of how tight the connections were (and since one leg was a regional carrier, I knew space would be limited). Ultimately it worked, but I took too many extraneous things.

My normal toiletries kit is in a GR1 Field Pocket, so using the Echo reduced the size by about 50%. What’s interesting is that I still had things in the bag which I didn’t need. This clearly means I need to rethink my entire toiletries setup, and it’s likely I will use the Echo Field Pocket going forward.

I simply had way too many items in the Context Organizer and will have to completely re-think that kit. For the first time I was stopped by TSA for the brass flashlight I had — they simply wanted to see what it was and let me be on my way. Still, I might rethink that as it is heavy and if it will get me stopped, it’s not worth it. I should note that I’ve taken it on seven other trips without issue.

Lastly, packing a suit is a real pain. I used the Brooks Brothers method for folding it and used the large packing cube to better protect it. When I got there the jacket was nearly perfect and after a day of hanging had no issues. The pants needed some light touch up with an iron in the hotel, as they had some odd rumpled bits.

My final note, traveling with the Ascedant Hoodie was amazing. I knew I needed it for the colder weather I was headed to, and it performed well there. But I also wore it while in the plane and stayed incredibly comfortable while keeping the air blowing on me. I might consider bringing it on more trips — however it didn’t pack down very small when I wanted it in the bag. Perhaps a light weight, compressible down jacket is in order next.

Overall, I nailed the amount of clothes needed, but packed much too heavy on the electronics gear.

Ben’s Packing List: February 1st 2018

Aerogel Insulation

We’ve recently noticed a new type of insulation showing up in outerwear. Many sites promote it as “NASA-inspired”, and they are not wrong. What we’re talking about here is aerogel, a very high tech and unique insulating material that found its original applications from NASA.

How does insulation work?

Outwear keeps you warm in three ways: conduction, radiation, and convection. Conduction occurs when objects are in contact (heat always moves from warm to cool), radiation is the transfer of heat as electromagnetic radiation (the body radiates mainly in the infrared region), and convection is the transfer of heat through fluid motion (air is a fluid, so wind causes convective heat loss).
Insulation helps slow conduction by trapping air, which has a low thermal conductivity.

Two common measurements of insulation value in outerwear include the insulation weight (in grams) and fill power. Weight is just what you’d expect — the weight of one square meter of insulation. Typically, warmer insulation is heavier. Fill power is the volume one ounce of insulation fills (higher fill is warmer because it traps more air).

What is aerogel?

Imagine a gel (gels are mostly liquid with a 3D solid network to hold them together) where the liquid is replaced with air — that’s aerogel (>98% air). Due to the size of the pores that contain the air, the thermal conductivity of an aerogel is far lower than insulation filled with air. Due to this extremely low thermal conductivity, aerogel insulation can retain its insulation ability even when compressed. This is due to the fact that while you can compress the air out of fibers embedded with aerogel (or in the case of an aerogel sheet, there isn’t much air to compress out), the aerogel itself is not compressed and still provides significant insulation.

The biggest issue with aerogel when it was first developed was that it is rigid and easily breaks into a powder. Since then various advances have given it some flexibility.


While it appears that other companies have made jackets from aerogel, OROS Apparel seems to have the oldest jacket still on the market. They developed what they call SolarCore, which is an aerogel in a polymer sheet. SolarCore is breathable and water-resistant, retains its insulation under compression (something many insulations can’t do), and is very thin and light. Their warmest jacket, the Orion Parka, claims to have been tested in stormy and below zero conditions — I’d say that’s a warm jacket!

PrimaLoft Cross Core and L.L.Bean

Just recently, L.L.Bean announced an outerwear exclusive with PrimaLoft for their new Cross Core technology. PrimaLoft has developed a way to fuse aerogel particles into their PrimaLoft Gold insulation fibers (here’s the patent if you’re curious) — this is called “PrimaLoft Gold Insulation with Cross Core”. Right now you can find this insulation in the L.L.Bean Packaway Jackets and the new line of Ultralight Sleeping Bags (35 °F semi-rectangular, 20 °F rectangular, 20 °F mummy, 0 °F mummy). The ability to retain insulation when compressed is a big plus for a sleeping bag, and not even the current standard, down, can claim this. Also, they seem to be at least half the weight of a comparable down bag (but they compress to a similar size).

Outdoor Research

Outdoor Research has also announced gloves utilizing a PrimaLoft aerogel technology (called “PrimaLoft Gold Aerogel”) for Fall 2018. We haven’t been able to find much information on these gloves, but they will most likely be unique in their thickness to warmth ratio. Also, from what we can find, it looks like this is a different technology in which the aerogel is encapsulated in a sheet that is not very breathable.

The Future?

We are excited to see how PrimaLoft builds on this technology as well as how our favorite outdoor brands utilize these two different types of aerogel insulation for the apparel industry.

Aerogel Insulation