PROTECTION Unprecedented 5 layers of 100% Kevlar / Para-aramid knit for Premium Thermal, Cut & Puncture Resistance Cowhide reinforced back shell for long term Radiant Heat Resistance NFPA 1971 Compliant Moisture Barrier blocks Chemicals PERFORMANCE Multi-layer Kevlar / Para-aramid Knit with Goat Skin palm and back of thumb provides Outstanding Flexibility, Grip and Dexterity Unique Sculpted Fingertip Design Provides Highest Level Tactility Intricate Sewing Construction for Highly Functional Tailored Fit Sewn Down Palm Layers for more Efficient Grip DURABILITY Premium Leather and 100% Kevlar / Para-aramid for Rugged Construction Reinforced Thumb Crotch Protects High Wear Area Inner Liner Sewn and Bonded at the fingertips CERTIFIED COMPLIANT TO NFPA 1971:2018 MK-1 ULTRA are a more tailored functional fit than other structural gloves so many users trade up one size, especially those with relatively thick/hands fingers. It is recommended to size generously Sizes: 70N (XS), 70W (SM), 76N (MED), 76W (LG), 82N (XL), 82W (XXL), 82XW (XXXL) **Cadet Sizes are equivalent to their Regular Size counterparts, except with 1/2″ shorter finger length.