These REI Co-op men's midweight base layer bottoms deliver warmth for cold-weather adventures with a soft, stretchy recycled polyester and spandex fabric that moves with you. A peached interior feels supersoft next to skin, while the smooth face lets outer layers slide on easily.
Built for multisport use, they feature a low-profile elastic waistband, fly opening, crotch gusset, flat seams and a locker loop. The 28 in. inseam (31 in. on tall sizes) and semifitted cut hug the body without restricting movement, and the fabric provides UPF 50+ sun protection and moisture-wicking performance.
Contains bluepass certified material - Contains recycled materials - Fair Trade Certified™ Factory - From a Climate Label Certified brand
Highlights
Recycled polyester/spandex is peached for a supersoft next-to-skin layer—and has a smooth face so layers slide on easily
220 g/m² fabric weight offers midweight warmth and wicks moisture to keep you comfortable, with spandex adding just the right amount of stretch
UPF 50+ sun protection
Soft elastic waistband has a low profile so it's comfortable under other layers
Fly opening
Crotch gusset allows full range of movement
Flat seams reduce chafing
Semifitted to hug the body for optimum performance
Locker loop makes it easy to hang these to dry or just keep them off the ground
Inseam length: 28 in.; Tall sizes: 31 in.
Machine wash cold; wash separately; gentle cycle; remove promptly; do not use bleach or fabric softeners; tumble dry low; low iron; do not dry clean
Contains bluepass certified material
Made in a Fair Trade Certified™ factory
REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
Videos
Size chart
Attribute
XS
S
M
L
XL
XXL
XXXL
24 IN Waist
26 IN Waist
28 IN Waist
30 IN Waist
31 IN Waist
32 IN Waist
33 IN Waist
34 IN Waist
35 IN Waist
36 IN Waist
38 IN Waist
40 IN Waist
42 IN Waist
44 IN Waist
46 IN Waist
48 IN Waist
50 IN Waist
Chest
35
36 - 38
39 - 41
42 - 45
46 - 49
50 - 53
54 - 57
Sleeve Length
32
32.5
33
33.5
34
34.75
35.5
Waist
27.5
28 - 30
32 - 34
36 - 38
40 - 42
44 - 46
48 - 50
24
26
28
30
31
32
33
34
35
36
38
40
42
44
46
48
50
Hip
33.5
34.5 - 36.5
37.5 - 39.5
41 - 43
44 - 46.5
47.5 - 50.5
51.5 - 54.5
32
33.5
34.5
36.5
37
37.5
38.5
39.5
40.25
41
43
44
46.5
47.5
50.5
52.5
54.5
Inseam
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
Better gear is built together. 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.
