The Kari Traa Voss Light Half-Zip is a durable women’s baselayer with a slim cut and sporty lines. Made for outdoor action, its flatlock seams cut out chafing and the 4-way stretch material moves with you when you go for it. The high collar keeps out the wind, while the ethically sourced soft, super-breathable, naturally odor-resistant Merino wool and Tencel™ Lyocell guarantee warmth and a clear conscience. The OEKO-TEX® 100 certification means that no fabrics pose any harm to human health.