Ideal for cold-weather hikes or a weekend ski trip, the Patagonia Capilene Midweight Bottoms for youth are perfect for staying warm. The double knit fabric with Polygiene(R) odor control provides moisture-wicking and can be worn several times without laundering. Flat seams prevent chafing and a hidden elasticized waistband ensures a comfortable fit. Features: Regular Fit Double knit fabric Polygiene(R) permanent odor control Fabric is bluesign(R) approved Avg. Weight: 145-g (5.1-oz) Fabric: 5.4-oz Polartec(R) Power Dry(R) 100% polyester (heathers, 52% recycled; solids, 69% recycled) Technology: Polygiene(R): Permanent odor control neutralizes odor by stopping the growth of odor-causing bacteria and fungi. Clothes stay fresh, odor free, and can be worn several times without laundering. Also, Polygiene(R) makes clothing last longer because bacteria and excessive washing won t break down fibers as quickly as they do on untreated material. Polygiene(R) is safe next to skin and it s bluesign(R) approved.