Not only a better solution...but the new standard. The next generation of Black Diamond Footwear starts here. The exceptional new X2 Boot combines the latest in footwear technology and fire industry innovations in 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 important-the new X2 will keep you safer. Features: The Calf-Fit System: allows for maximum comfort and fit Integrated Pull-On System: Reinforced integral loop provides a fast, sure grip, eliminates broken loops, Comfort Shin Guard: Thick FR leather, padded for maximum protection from the steady pressure of a ladder rung, sudden impact, and abrasion; form-fitting segments conform to the shape of your shin with minimal extra bulk FireTuff Leather Upper: genuine, heavyweight f ire retardant, FireTuff leather Fusion Upper: a powerful blend of solution dyed Nomex / Kevlar and Teflon F.P.P.E. Combines the durability of Nomex, the strength and abrasion resistance of Kevlar and water resistance of patented Teflon F.P.P.E. 3-Point Heel Lock System: A unique molded rubber heel lock cradles the foot and locks the heel securely in place, correctly positioned to prevent ankle roll and protect against side impact. Whether you're walking, running, climbing, or crawling, this important feature of the X2 Boot ensures a better fit, more comfort, and a genuine advance in safety. CROSSTECH© membrane with Omaha lining: a high-performance wicking fabric originally developed for aggressive military applications. It makes a superior functional and protective lining for firefighting. Stitch-down lining construction: 'Strobel' stitched down construction provides optimum fit; prevents liner pullout 3M Scotchlite Reflective Material: flame-resistant, fluorescent, and reflective material for added viability Ortholite Footbed: Tri-density, multi-fit, removable footbed with breathable, anti-fungal, TPU heel cradle for shock absorption, odor prevention, and all-around comfort, Rubber Toe Cap and Heel Counter: rubber top cap protection for high-abrasion and a steel toe, HI 500 Oblique Comfort Toe meets or exceeds ASTM Standards Lenzi Puncture Protection Midsole: high performance composite resists penetration from below.