Stay dry and cool in this silky baselayer with 15-UPF sun protection ideal for high-exertion, hot-weather pursuits. Silky soft Capilene 1 is the lightest of our technical baselayer fabrics. Fast-drying, highly breathable and sleek, it provides 15-UPF sun protection and can be worn either on its own or under layers in cooler temps. V-neck ventilates; brushed, fold-over elastic binding retains shape and is soft against the skin. Cut long enough to tuck in. Patagonia® logo on back of neck, 2.5" wide. The UV protection offered by this product is rated “good” when tested in accordance with Australian/New Zealand test methods AS/NZS 4399 or AATCC 183/ASTM6603/ASTM D6544. 3.4-oz 100% recycled polyester with 15-UPF sun protection and Gladiodor® odor control for the garment. 96 g (3.4 oz) Made in USA.