The next generation of Black Diamond Footwear starts here. The exceptional X2 Boot combines the latest in footwear technology and fire industry innovations into a structural firefighting boot that truly breaks new ground. Unique new features and old-fashioned quality construction come together to improve fit, durability, protection, comfort, speed, and even looks. But most importantly, the new X2 will keep you safer. Black Diamond Footwear takes the CROSSTECH© Moisture Barrier, W.L. Gore's most advanced moisture barrier for structural fire boots, and makes it even better with an advanced Omaha lining. It's a superior mil-spec combination originally developed for aggressive military applications that marries the ultra waterproof/breathable barrier protection and performance of the CROSSTECH© membrane with the advanced moisture-wicking and smooth comfort of the Omaha lining. Plus Black Diamond uses traditional stitch-down Strobel construction to fasten the lining securely into place to prevent bunching and pull-out. We don't think you'll find a more comfortable combination anywhere. The X2 Boots are not only a better solution, but also the new standard. Unique removable footbed provides advanced protection and a comfortable fit for almost every firefighter--accommodates medium, wide, and extra-wide feet in one boot size! Hybrid Leather/Fusion Upper combines FireTuff© Leather, rubber cladding, and a Nomex/Kevlar/Teflon F.P.P.E. blend for more performance with less weight 3-point Heel Lock/Ankle Guard gently holds the heel in place for a secure, comfortable fit and improved protection Calf-Fit System with FR elastic insert comfortably accommodates all size calves Integrated Pull Straps & built-in Boot Jack enables easier donning and doffing, whether wet or dry Certified NFPA 1971 (Structural Fire Fighting)