eVent® weatherproof bootie construction keeps your feet dry while also providing breathability 5 mm cushioned footbeds Altra EGO™ midsoles offer a responsive yet soft ride for every step of your journey Supportive TPU heels add protection and durability FootShape™ toe boxes allow the toes to relax and spread out naturally and the big toe to remain in a straight position Balanced Cushioning™ platform places the heel and forefoot the same distance from the ground, which encourages low-impact landings Rugged, grippy DuraTread™ outsoles excel on rocky terrain Stack height: 25 mm