Outdoor Research Swoop Fire Resistant Mitt Shells Made In The USA Massif Flame stretch fleece fabric passes the stringent ASTM D 6413 standard for flame resistance Zoned insulation provides warmth where it's needed and removes bulk where dexterity and tactility are key Seamless, supple FR goat-leather fingertips allow for acute sensitivity Leather cut-outs on palm and finger joints minimize bulk for greater articulation