Fast-wicking, fast-drying, highly breathable and sleek Wear alone for sun protection in hot/humid conditions or as a layering piece in cool weather Rib-knit collar is wide for a classic crew look Cut long enough to wear tucked in Contoured shoulder panels reduce chafe under pack or luggage straps and improve fit Slim fit 3.7-oz 100% polyester (100% recycled) with Gladiodor™ natural odor control. 100% recyclable through Patagonia's Common Threads Recycling Program 156 g (5.5 oz) Made in USA. ALL CLEARANCE ITEMS ARE FINAL SALE. NO REFUNDS NO RETURNS.