A sunshirt like no other. Beloved by riders everywhere, Sunstopper baselayers deliver more than UPF protection. Innovated with cooling, moisture-wicking, and odor-fighting technologies, they're crafted from a soft fabric that keeps you looking tidy from sunup to sundown. We even added mesh at each underarm for maximum breathability without sacrificing the coverage you need on warm, sunny days. AriatTEK® is designed for optimal comfort in any weather ClimateTEK™ dynamically responds to your body temperature to keep you cool when things heat up FreshTEK™ sustainable odor-resistance Moisture Movement Technology™ helps keep you dry Sun Protection Fabric™ gives you UV coverage Mock collar with ¼ zip styling Breathable mesh paneling Ariat Women's Sunstopper 3.0 1/4 Zip Baselayer - North Atlantic Dot