Smooth, soft face makes for easy layering, and HeiQ® Fresh durable odor control keeps things fresh. Soft, brushed, fast-drying elastic for added next-to-skin comfort; locker loop for hang drying. Fabric’s diamond-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance. Gusseted crotch for comfort and unimpeded mobility. Functional fly and flatlock seams to minimize chafing. Stretch for added comfort and improved fit during movement. Fair Trade Certified™ sewn. Features Patagonia’s Most Versatile Baselayer Comfortable Elastic Waist Internal Diamond Grid Pattern Gusseted Crotch Flatlock Seam Construction Stretchy Comfort Fair Trade Certified™ Sewn Made in Sri Lanka 164 g (5.8 oz) Materials 5.1-oz (147-g) 100% recycled polyester diamond-grid double knit with HeiQ® Fresh durable odor control and 50+ UPF sun protection.Fabric is certified as bluesign® approved.Fair Trade Certified™ sewn. Size & Fit Slim fit Patagonia, M's Capilene® Midweight Bottoms