The Patagonia Men's Capilene Midweight Bottoms is Patagonia's most versatile polyester baselayer with the greatest comfort range and Polygiene permanent odor control. It might be summer everywhere else, but on Mount Hunter’s Kennedy-Lowe Route, it always feels like the middle of winter. Designed to manage the extremes of high-output exertion, our Capilene® Midweight fabric hits the sweet spot of weight, breathability and wicking that is the essence of versatility worn alone or with additional layers. It keeps you dry and comfortable when worn during high-exertion activities in cool-to-moderate temperatures and insulates beneath a shell in cold weather. Constructed with a Polartec® Power Grid™ fabric, it has a smooth face for easy layering and a brushed-back grid that aids in wicking as well as warmth. The fabric has 33–66% recycled-polyester content and is treated with Polygiene® permanent odor control. Features include a brushed elastic waistband for next-to-skin softness, a gusseted crotch for mobility, a functional fly and flatlock seams to minimize chafing. Features and Specifications Polartec® Power Grid™ fabric has a smooth face for easy layering; spandex for stretch and ease of movement with Polygiene® permanent odor control Fabric’s brushed-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance Elastic waistband is brushed for next-to-skin softness Gusseted crotch for comfort and unimpeded mobility Functional fly Flatlock seams to minimize chafing 192 g (6.8 oz) Materials: 5.2-oz (175-g) Polartec® Power Grid™ 97% polyester (solids: 66% recycled; heathers: 33% recycled)/3% spandex with Polygiene® permanent odor control. Fair Trade Certified™ sewing. Fabric is bluesign® approved Patagonia Men's Capilene Midweight Bottoms Thermal Underwear