Hoka Gaviota 4 Black White 1123198 BWHT & 1123200 BWHT Size:8.5M low bulk insulation for warmth low bulk insulation for warmth and comfort• SOLARCORE® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra thin• 100% recycled mesh footbed cover• Cleansport NXT™ treated for natural odor control• 5% recycled PU removable footbed• Merrell Air Cushion in the heel absorbs shock and adds stability• Molded nylon arch shank• Super Rebound Compound midsole provides durable shock absorption to help reduce torque and allow for a smooth transition into the midfoot• Vibram® Arctic Grip™ All Terrain outsole designed to effectively extend the winter traction season Reinforced eyestays provide increased durability J Frame™ midsole support Breathable engineered mesh