EXTRA LAYERS OF PROTECTION - provide unsurpassed warmth on the coldest days! 5.5 mm bootie; 2.5 mm DENSOPRENE XD foam (extreme density) for extra protection; 2 mm airmesh; 2 mm warm fleece lining. 6 layers of protection + EVA cold-blocking midsole = 7 layers. Comfort Range of -50° to 65° F DS1 PREMIUM OUTSOLE - two-piece sole with a high-traction moulded-rubber outsole and comfortable cold-blocking EVA-sponge midsole designed for outdoor use. The outsole is made of natural rubber and features an inner set lugs of designed for maximum any-angle grip and flex, while the outer lugs are designed for maximum lateral/medial support and wear. Lugs design releases and minimizes build up of mud and debris on the outsole during use. HYDROKOTE WATER-REPELLENT- All DRYSHOD boots are built to be 100% waterproof from top to bottom. Water rolls off the nylon outer and dries in seconds keeping the exterior textile from icing up and from retaining water in the fibers in wet conditions GENUINE NATURAL RUBBER OVERLAYS - This protective design starts with only genuine hand-laid rubber- No PVC, PU, or TPR; DS1 moulded high traction outsole for all terrains EASY-ON/EASY-OFF - 4-way stretch breathable airmesh lining and generous heel kick for easy-on/easy-off convenience; roll-down calf pipe for a superior fit and comfortable wear; sturdy pull tabs for easy-on/easy-off convenience and safety Dryshod Arctic Storm Extreme-Cold Conditions Winter Boots Have A Total Of 12Mm Of Insulated Warmth And Protection For The Coldest Days. These Dryshod Insulated Boots Are 100% Waterproof, With 5.5Mm Densoprene Foam Insulation With 2Mm Airmesh Lining And 2Mm Warm Fleece. They're Made Of Genuine, Hand-Laid Natural Rubber (No Pvc, Pu, Or Tpr) And Have Extra Rubber Reinforcements In The Toes And Heels. A Comfort Range Of -50°F To 65°F Takes You Through The Coldest Seasons. 4-Way Stretch Construction And Air Mesh Lining Keep Feet Dry. Roll-Down Calf Pipes Let You Tuck In Your Pants Or Vent Your Legs. The Work Boots Feature Nylon Shanks, Molded Outsoles For Outstanding Traction, Cold-Blocking Eva Midsoles, And Removable Eva Sockliners. Dryshod Arctic Storm Extreme-Cold Conditions Winter Boots For Men Are Ideal For Outdoor Work In The Mud, Muck, Snow, And Slush. Imported.