Unleash your best hike wearing Merrell's flexible All Out Blaze. The natural shape activates your foot muscles, aggressive lugs and increased surface contact promote agility, and the UniFly midsole provides responsive cushioning. This product will be shipped directly from Merrell and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. . 6 mm heel to toe drop 15 mm heel cushion 9 mm forefoot cushion. UniFly midsole disperses impact and stabilizes feet for a solid takeoff. Soft E foam midsole with I Tech harder top sheet for cushioning and stability. Vibram rubber outsole with aggressive 5 mm lugs and increased surface contact for animal like agility on changing terrain. Waterproof oily leather and mesh upper for abrasion resistance, breathability, support, and flexibility. Merrell Stratafuse upper provides a glove like fit for lightweight durability and natural movement. Molded TPU external heel counter for added stability. Dye cut rubber. Bellows tongue keeps debris out. Breathable mesh lining treated with M Select Fresh for odor control. Merrell Omni Fit lacing system provides a precise, glove like fit.