The Hauler 6" boot is a part of our new ULTRADUTY collection. For the hardest jobs and the toughest environments, you'll never need more than UltraDuty. Built from the ground up with our Ergo design philosophy, the Hauler combines extreme comfort and flexibility with maximum durability. 200g Thinsulate lining keeps feet warm and dry Nylex sock lining keeps feet dry Molded EVA foam footbed for longwearing comfort Resilient PU midsole for cushion and rebound T1200 Durable rubber outsole + SRX for extreme slip resistance Full Grain Leather Cement Technologies:SRX: Extreme Slip Resistance, Thinsulate 200g, Waterproof, Composite Toe (CT), Electrical Shock Resistant, Slip Resistant, Puncture Resistant (PR), CSA, Ultraduty