Waterproof nubuck, suede and mesh upper. Bellows tongue keeps debris out. Breathable mesh lining treated with M Select Fresh odor control. EcoRight and Lazy Foam footbed = 70% recycled open cell Merrell Remember Me Foam memory foam footbed for breathability and comfort. MIDSOLE/OUTSOLE: Merrell air cushion in the heel absorbs shock and adds stability with a light weight EVA midsole for durability. Butterfly TPU arch shank. M Select GRIP tune each outsole with durable traction that grips when and where you need it.