ACLIMA HOTWOOL® PANT is a more robust base layer bottom for activities in freezing temperatures. Its thicker Merino wool composition makes for a durable and warm base layer due to its wool/polyester/polyamide blend. HotWool’s terry interior creates insulative air pockets that trap the wearer’s body heat. This trait has made Aclima® HotWool a go-to base layer for Special Operations Forces in cold climates. Layer the HotWool base layers over the WoolNet layers for extreme cold environments when maximum insulation is required.