The Merrell All Out Blaze Aero Hiking Shoe features a lightweight design that is responsive, resilient and flexible. This is a shoe is built to activate your natural form and maximize your effort on the trail. Mesh lining treated with M-Select FRESH naturally prevents odour before it starts for fresh smelling feet. The Vibram sole has lug patterns that provide stability in all conditions, with no lugs under the arch so your foot flexes naturally. The rubber compound provides traction whether wet or dry. Uni-Fly is an ultra-resilient, soft foam with strategically place firmer shock pads, provides a soft landing, dispersing impact and allowing for a stable take-off.