How to Choose Base Layers

A good day outdoors starts with a good base layer. These synthetic tights from REI Co-op provide midweight warmth for cold-weather adventures. They're soft and stretchy for easy movement.
Imported.
View all REI Co-op Women's Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | 92% recycled polyester/8% spandex (bluepass certified) |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50+ |
| Moisture Wicking | Yes |
| Underwear Weight | Midweight |
| Inseam (in.) | 25.5, 28 inches |
| Gender | Women's |
| Sustainability | Contains bluepass certified material Contains recycled materials Fair Trade Certified™ Factory From a Climate Label Certified brand |
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I would normally wear base layers during the snow season underneath an outer layer but since it’s a few months before winter, I wore these out on an evening walk/hikes instead. They felt good against the skin and were not itchy. I didn’t experience any chafing while walking either. They were easy to wash and I put them through the dryer on med heat since they’re not wool. These are definitely high-waisted though and hit at my natural waist, which is what I prefer when snowboarding (not so much when walking!). I think they run a tad large but I prefer my base layers loose fitting. Also I would definitely wear something over them if not using for snow sports as they don’t have any pockets for anything.
These arrived just as the weather jumped from summer right into fall, with chilly days and cold nights. I wore these on several day hikes and stayed comfortably warm and dry. They fit as expected and are thin enough to avoid overheating.
This base layer is great! The fabric and weight of the pant is great. I sometimes find base layer fabric to be uncomfortable but I love the feel of these! I sized up because I enjoy my base layers to not be too snug but you can get your normal size. I am also tall and the length on these were great!
Bought this for a backpacking trip out west. Used it as a base layer in 30 degree weather and for sleeping in 25 degree weather. Kept me warm, and washes up well. Would recommend.


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From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.

