MSR Denali Evo Ascent Snowshoes (Black) Unmatched on steep terrain: elevator heel lifter reduces calf fatigue, making climbing easier and more efficient Superior traction steel traction blades with saber teeth, crampons, and molded braking bars in deck provide exceptional grip Walk Easier: tapered tip and tail make walking easier and more natural. versatile: 6 evo flotation tails Secure fit: crampon extension plate eliminates heel drift, while four-strap binding provides a great fit and secure attachment to snowshoe All msr snowshoes have lifetime warranty