No ifs. No buts. The best-selling Butterfly H/Z is a super-comfy technical women’s half-zip baselayer pullover. It’s back in cool colors with a softer-than-ever feel.

The Kari Traa Butterfly H/Z is an award-winning women’s half-zip pullover for hard-training girls. Whether you wear it as a baselayer or on its own, the super-soft, breathable fabric quickly wicks away moisture when you work it. The slim fit and flatlock seams keep it comfy, while the stretch material moves with you. Extra-long cuffs and a ribbed hem stop it riding up. And it still rocks the subtle signature pattern.