Details The North Face Summit Breithorn FutureLight™ Mountaineering Boot - Men's The North Face's Breithorn FutureLight™ Boot is a very light mountain boot with a heel bail for attaching semi-automatic crampons to. Developed with breathable-waterproof FutureLight™ technology, The North Face's Breithorn men's mountaineering boots are light, protective and breathe as hard as you do. They feature a Vibram® outsole for exceptional traction on pretty much every kind of terrain, giving you the confidence to tackle challenging hiking conditions. A stretch Lycra® collar helps eliminate debris, while the toe cap and heel overlay protect against scuffs and scrapes with rocks. Plus, the heel bail offers semi-automatic crampon compatibility, delivering unparalleled grip over ice and hard-packed snow. Weight: 551.5g per shoe Stretch Lycra® collar to help eliminate debris Scratch-rubber rand, toe cap and heel overlay Heel bail for semi-automatic crampon compatibility (you may need a flex bar as the boots are on the soft side or B2) Locking hardware at midfoot for an improved fit Breathable-waterproof FUTURELIGHT™ bootie UPPER: Ripstop fabric in quarter and tongue for enhanced durability SOLE UNIT: Semi-rigid nylon fiberglass reinforced shank OUTSOLE: Vibram® Litebase Mont rubber outsole Specifications Summit Breithorn FutureLight Hiking Boots - Men's