A stop-and-go pace, like that of alpine climbing or backcountry riding, can leave you with the shivers. Stay warm and dry with the Patagonia Merino 2 Bottoms for Boys, lightweight baselayer bottoms built with Patagonia's most versatile merino weight. Built for an active lifeDesign in warm to cool weather, Merino 2 Bottoms are made from 73% merino wool wrapped around a 27% all-recycled polyester core for a luxurious hand. Inherently soft and nice, merino naturally resists odor, moves moisture away from the skin, regulates body temperature, and stretches. Details include a brushed-elastic waistband, offset inseams and a effective fly. Slow-washed merino for next-to-skin softness. Machine-wash cold; lay flat to dry.