A sunshirt like no other. Beloved by riders everywhere, our 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 young riders looking tidy from sunup to sundown. We even added mesh at each underarm for maximum breathability without sacrificing the coverage they need on warm, sunny days. Sunstopper 3.0 14 Zip Baselayer Product Features : AriatTEK® is designed for optimal comfort in any weather, with built-in performance features that adapt to changing conditionsClimateTEK™ dynamically responds to your body temperature to keep you cool when things heat upFreshTEK™ odor control helps keep you feeling fresh through long hours of wearSun Protection Fabric™ helps block harmful UV rays, keeping you covered and comfortable during long days outdoors, Stand collar with quarter-zip frontBreathable mesh paneling Kid's Sunstopper 3.0 14 Zip Baselayer in Navy Dot, Size: XS by Ariat