All Out Blaze Vent Mid Waterproof Hiking Boot Drizzle or shine your hike is a go in the Merrell All Out Blaze Vent Waterproof shoe. M SELECT DRY technology delivers waterproof, moisture-wicking protection. Waterproof leather and mesh upper materials. Bellows tongue helps keep debris out. Lace-up closure. Molded TPU external heel counter adds stability. Heel pull loop. Plush tongue and collar. Breathable fabric lining offers a great in-shoe feel. Molded foam footbed. Soft E-Foam midsole with I-Tech harder top sheet. Midsole Height:Heel/Toe: 14 mm/8.5 mm Differential: 5.5 mm Vibram TC5 outsole with 5 mm hollowed lugs for reliable traction over mixed terrain.