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Running Baselayers

The best running baselayers, reviewed and curated by the Trailspace community. The latest review was added on September 5, 2022. Stores' prices and availability are updated daily.

Recent Running Baselayer Reviews

rated 5 of 5 stars
Smartwool Merino Boxer Brief

Smartwool brings Merino magic with their Boxer Brief. Comfortable, functional, and surprisingly durable these are great for any sort of hiking or backpacking, but especially useful on extended trips when you appreciate the no-stink qualities of good wool.   . I have had great experience in the past with Smartwool products having enjoyed their socks and insulating layers. When the chance came up to test their Merino Boxer Brief I had high expectations. Made with a Merino/nylon blend, 150g weight… Full review

rated 4.5 of 5 stars
Outdoor Research Enigma Boxer Briefs

Close-fitting as a boxer brief intended for active use should be, the Enigma Boxer Briefs feel good, wick extremely well, and appear to be durable. This is mostly-nylon with 12 percent merino wool. It's quite stretchy and performs more like nylon than wool. Though the fabric is thin, it seems like it should last. Mixing in wool helps blunt the odor factor, too. HOW THEY FIT The Enigma Boxer Brief is a relatively short (6 1/2 inch inseam) and stretchy boxer made from the same material as Outdoor… Full review

rated 4.5 of 5 stars
Smartwool Merino Sport 150 Brief

Super comfortable undies, which will help you stay sweet smelling for days, with no chafing. Yeah, I'm reviewing underwear. Being a big Merino fan, I decided it was time to take the final step towards full commitment, by going right down to the basics. I decided to give these a try.   Fit: The overall fit is good. I'd read a couple of reviews criticizing the extra wide waistband, but in my opinion, it makes them much more stable and keeps them in place better than other briefs I've used. I like… Full review

rated 5 of 5 stars
Thinx Classic Undies

Dealing with periods in the backcountry can be incredibly frustrating. But Thinx unswear just might offer a solution. Periods are a regular part of most women's life. And yet they're still taboo to talk about. Instead of weighing all of our options, we pace along the period aisle in the grocery store, opting to use the most popular products (pads and tampons). But what other options are there? And how do you begin to handle periods in the backcountry? As someone who spends a lot of time in the wilderness,… Full review

rated 5 of 5 stars
ExOfficio Give-N-Go Boxer Brief

6-star underwear! Would give six stars if I could. Have owned two pairs for about five years now. Initially purchased for treks to avoid the dreaded chafing. They are now used for any athletic venture. Quality: Two pair that have lasted five years, that alone is impressive. Material is kind on the skin, stretches well, but stays on the body.   Comfort: Have worn on 15-mile hikes, lots of sweating and ZERO chafing. They wick moisture amazingly and keep their form after a long day. Breathable: No… Full review

rated 1 of 5 stars
ExOfficio Give-N-Go Boxer Brief

The fabric makes the genitals sweat and smell. The fabric seems okay, but the genitals sweat and now smell.  Full review

rated 5 of 5 stars
Minus33 Acadian Lightweight Boxer Brief

Worn for seven days straight on a canoe trip in Northern Maine during variable weather in august!!! Amazing!!! We outdoor industry dedicatees remember the Ex Officio campaign claiming that their underwear could take you around the world and beyond. That their undies are so great that with a simple weekly sink washing whenever you happen into a hostel your drawers will smell of roses and no crotch rot will ever inhibit your adventuring. As is my way, I put them to the test.  They were good, I’ll… Full review

rated 4 of 5 stars
ExOfficio Sol Cool Boxer Brief

Jade infused fabric pulls moisture from your body for a cool sensation. Slim fit does not bunch up. I was sent a pair of ExOfficio Sol Cool boxer briefs in late January for testing and review. I actually tried to wear them during the winter but found that they were just too cool for comfort at that time of the year. Once things started to warm up I gave them a thorough workout. Comprised of 52% Cotton, 42% Nylon, 6% Spandex, the nylon has been infused with Jade, yes, Jade the rock. Apparently,… Full review

rated 5 of 5 stars
MyPakage Pro Series 2-in-1

Pro series long underwear and athletic shorts in one package. The unique MyPakage 3 dimensional pouch protects your precious parts. Unless you have worn MyPakage underwear, you are really missing a great experience. Utilizing their 3-dimensional keyhole technology pouch that surrounds your package, they give you the best feeling underwear on the planet. There is no more adjusting your package because the pouch keeps everything nicely tucked away and not in constant contact with your legs. Forget… Full review

Other Types of Running Clothing

Find more running clothing reviewed in these related categories:

Running Tops

Running Bottoms

Running Shells

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