Don't let icy winter conditions get the best of you. Lace into a cold-weather ready Timberland PRO® work boot and get the job done!Style number 89635214.Premium, waterproof leather upper for extended durability. Waterproof membrane helps keep the elements out. Dual-purpose cast metal hardware promotes secure lacing. Molded Timberland PRO rubber toe bumper. Rigid external heel cup for increased lateral stability. Plush collar for extra comfort. 600g flame laminated Thermolite™ insulation for added warmth without the bulk. Contoured, open-cell polyurethane footbed features Outlast® Adaptive Comfort® technology for breathable comfort.Dual-density PU and thermal plastic urethane midsole provides lasting cushioned comfort. Fiberglass shank for increased structural support. Slip- and abrasion-resistant TPU rubber outsole features deep lugs for traction.Three-quarter Goodyear Welt cement heel construction. Low temperature formulation maximizes traction on cold surfaces (tested using SATRA TM144:2007 frosted rough ice surface) and extends flexibility in cold environments. Oil-resistant sole tested for volume swell using EN345 TMP ASTM fuel A 7 Diesel ISO 1817 liquid F for 22 hours and ASTM IRM903 and Fuel B for 46 hours.Soft toe meet ASTM F2412-11, ASTM F2413-11 and ASTM F2892-11 electrical hazard standards to provide secondary underfoot protection against the hazards of stepping on live electrical circuits, electrically energized conductors, parts, or apparatus.