The open, highly breathable knit and feathery weight of Capilene 2 affords unhindered airflow, excellent wicking for endurance activities in warm to moderate temperatures--it's also our fastest-drying Capilene. Because of its low-bulk design and streamlined fit, Capilene 2 also acts an excellent layering piece beneath Capilene 3 or 4 during colder weather. The curvilinear construction provides an updated, fast-forward fit, with seams that won't chafe under a pack or climbing sling. Made of quick-wicking, fast-drying 54% post-consumer recycled (and 100% recyclable) Capilene 2 polyester, with Gladiodor natural odor control. Made in USA. 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. Learn more