Hard-charging winter days start out cold, but you always warm up. The men's REI Co-op Midweight Base Layer half-zip top offers the warmth of long sleeves and the easy venting of a front zipper.
Features
Smooth outer face lets layers slide on easily, while a brushed interior provides warmth
High neck coverage with a half-zip front lets you open up for venting when you're working hard
Fabric wicks moisture and dries quickly to keep you comfortable
4-way stretch delivers a flexible range of motion
Flatseam construction reduces bulk and chafing, and rolled-forward shoulder seams prevent abrasion from pack straps
UPF 50+ rating protects against sun rays
Recycled materials keep waste out of landfills and bluesign®-approved materials conserve resources and protect the health of the environment, workers and wearer (you!)