Insulation:
200 grams synthetic lightweight, low bulk insulation for warmth and comfort. Complete with SOLARCORE® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra-thin.
Waterproofing: Waterproof full grain leather upper, complete with a waterproof membrane seals out water and lets moisture escape.
Traction: Vibram® Arctic Grip™ All Terrain outsole designed to effectively extend the winter traction season, due to the enhanced durability and versatility.

Comfort Features:
• Double stretch gore for easy on and off
• Protective and abrasion resistant rubber toe cap
• Cleansport NXT™ treated for natural odor control
• 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

Materials:
• Waterproof full grain leather upper
• 100% recycled webbing
• 100% recycled fleece lining
• 100% recycled mesh footbed cover
• 5% recycled PU removable footbed

Additional Measurements:
• Half pair weight: 1lbs-0.57oz, 470g