The FR 2L Down Pants are part of the takibi-spec outerwear series, built to handle whatever winter throws at you. Flame-retardant properties make them a natural fit around the campfire, while waterproofing keeps rain and wind out, and high-spec 800-fill-power down means they perform in severe winter camping. The outer shell is an original two-layer fabric that combines flame resistance and waterproofing, built from a blend of natural-textured polyester spun yarn and aramid spun yarn. The down is water-repellent too, solving the usual problem of down losing its warmth when wet, and it's machine washable at home. Despite being down pants, the tapered silhouette keeps the fit clean and non-bulky. They're also partially lined with Outlast® temperature-regulating material, which senses body heat and absorbs, stores, and releases it to keep you at a comfortable warmth.