The Timberland PRO Gridworks work boots take on freezing, oily, slippery, and rough terrain, with lightweight, cold-formula outsoles built for traction. Their job site performance features include rugged Premium Timberland full-grain, waterproof leather uppers with internal waterproof membranes that offer maximum waterproof protection and blood-borne pathogen resistance, Anti-Fatigue Technology footbeds that absorb shock and return energy to your feet with every step, and breathable, moisture-wicking linings made of ReBOTL fabric containing at least 50% recycled plastic with a treatment to help keep them smelling fresh. Plus, electrical hazard protection infuses these durable boots with the extra safety you need.