Premium Timberland upper with waterproof membrane and 200 grams of insulation. We are members of the Leather Working Group. Asymmetrical composite safety toe cap. Protection against electrical hazards. Protective thread on the upper and welt for durability and heat resistance. Fiberglass shank for structural support. Puncture-resistant metal-free plate. Reinforced molded rubber toe cap. Rigid outer heel cup promotes lateral stability. Breathable, moisture-wicking ReBOTL fabric lining containing at least 50% recycled plastic and featuring an antimicrobial treatment to control odorsé. Polyurethane footbed with anti-fatigue technology provides shock absorption and energy return. ExoSpine technology for a stable and durable structure and improved heel positioning. Construction combining a three-quarter stitched welt and a glued heel.lightweight, all-season, non-marking TPU outsole resists heat, oil, slipping and abrasion.