Patagonia's most versatile baselayer for the broadest range of temperatures, the quick-wicking Boys's Capilene 3 Midweight Crew has a brushed interior that retains heat and a smooth jersey exterior that provides superior glide for snag-free layering. The slightly fitted silhouette affords a bulk-free fit without compromising mobility. Shoulder and side seams on the tops are thinkfully placed to reduce friction from a climbing sling, pack or luggage straps. The look is streamlined. Made of quick-wicking, fast-drying and insulative 64% post-consumer recycled (and 100% recyclable) Capilene 3 polyester, with Gladiodornatural odor control. Imported. Common Threads Recycling ProgramResearch shows that the environmental impact of recycling worn-out Capilene base layers into new polyester fiber is significantly lower than making that same fiber from virgin materials. Taking into account that worn-out garments are diverted from trash incinerators, making new polyester fiber from recycled garments results in an energy savings of 76% and a CO2 emissions [greenhouse gasses] reduction of 71%, versus creating that fiber from new raw material. Capilene Core PerformanceCapilene base layers afford quick-drying, next-to-skin moisture management for all activities in all conditions ? from high-altitude bivies to sun-soaked H2O sports.