The Azura features a welded TPU film for lighter weight, a bellow tongue to keep debris out, and a breathable mesh lining treated with M Select FRESH odor control. The EcoRight and Lazy Foam Footbed is 70% recycled open cell Merrell Remember Me Foam™ memory foam for breathability and comfort. This shoe has an 11mm drop, a butterfly TPU arch shank, and 4mm lug depth. The Merrell air cushion in the heel absorbs shock and adds stability with a lightweight PU midsole for durability. The Merrell Grip Outsole with Winter Compound grips in cold and wet conditions.