The Mountain Hardwear Women's Butter Zippity Pullover is a cool weather training top, made from buttery soft fabric in a versatile silhouette, with a 14 zip for venting. Constructed of 87% polyester, 13% elastane P. Butter Jersey fabric. UPF 50 sun protection. Wicking, fast drying stretch fabric. Zip neck for ventilation. Chin guard for comfort. Zippered secure pocket at side panel for storage. Antimicrobial finish controls odor. Thumb loops keep hands warm. Standard fit. Avg. weight: 7 oz. Avg. length: 26 in. Import.