Design: Waterproof membrane seals out water and lets moisture escape Waterproof suede leather and mesh upper 100% recycled laces and webbing Neoprene stretch collar for easy on and off Lycra(R) lining In-Shoe Comfort: 50% recycled removable EVA foam footbed Dual heel and tongue loops for ease of entry as well as carabiner compatibility 100% recycled mesh footbed cover Durability & Traction: Molded TPU heel counter for security Lightweight EVA foam midsole for stability and comfort Rubber outsole Additional Details: Cleansport NXT(TM) treated for natural odor control