We built the Flex ¼ Zip to be a mountain-ready baselayer that keeps you comfortable and moves naturally with your body.



Flat seam construction adds comfort and a sleek, low profile, while 2-way stretch fabric provides dynamic flexibility. A mock neck design with a chin protector adds essential warmth. To keep track of your must-haves, we’ve also included a zipper chest pocket on the Flex. For easy layering, the Flex features an integrated elastic thumb loop.