The Ariat Womens Sunstopper base layer is designed to keep you cool and dry during any activity. It features AriatTEK® Heat Series technology, Moisture Movement Technology™, and Sun Protection Fabric™ with UPF 45 rating to keep you protected from ultraviolet rays. The lightweight pique knit, raglan-cut sleeve and breathable mesh panelling provide a flattering and comfortable fit. Take on any challenge with confidence.