The open, highly breathable knit and feathery weight of Patagonia's Capilene 4 Expedition Weight Bottoms for Girl affords unhindered airflow, excellent wicking for endurance activities in moderate to cold temperatures and it Patagonia's fastest-drying Capilene. Because of its low-bulk design and streamlined fit, Capilene 4 also acts an excellent layering piece during colder weather. Made of quick-wicking, fast-drying 54% post-consumer recycled (and 100% recyclable) Capilene 4 polyester, with Gladiodornatural odor control.