2023251 Mountain Hardwear Women's Trekkin Go Sleeveless The Trek N Go Sleeveless shirt is crafted from a sustainable jersey-knit fabric that's soft enough for lounging all afternoon in the park, stretchy enough for impromptu yoga sessions, and features wicking UPF 40 protection that's more than down for fun in the sun. Uses: Hiking, Travel, Camping UPF 40 filters harsh UV rays Soft and sustainable jersey fabric Moisture wicking with added stretch for comfort and ease of wear Forward shoulder seams to prevent chaffing while wearing a pack High crew-neck with shoulder coverage Cropped length and curved hem Standard fit Fabric 76% Recycled Polyester 19% Tencel Lyocell 5% Elastane