How to Choose Base Layers

A great day outdoors starts with a great base layer. This midweight top from Columbia has 4-way stretch fabric for comfort and a thermal-reflecting lining. Thumbholes at the cuffs add a cozy feel.
Earn 2x card rewards Instead of 5%, earn 10% in card rewards†on REI purchases—even sale items—with your REI Co-op® Mastercard® Sep 18–28. Terms apply. Learn more
Imported.
View all Columbia Men's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | Partial-zip |
| Fabric | 85% polyester/15% elastane |
| Moisture Wicking | Yes |
| Underwear Weight | Midweight |
| Sleeve Length | Long Sleeve |
| Thumbholes | Yes |
| Gender | Men's |
Adding a review will require a valid email for verification


Buy a lifetime $30 membership and make a $50 purchase by Nov 12, 2026.*
$6
10% Reward*
on this and every eligible full-price item*
+
$30
Bonus Card*
valid for 30 days after joining*
=
$36
Value