Astral Mary Jay - Women's Intended Use: Water, Casual, Travel, Boat Uppers: Hydrophobic Canvas with 210D printed nylon liner. Instep strap with brass buckle. Drainage at heel and toe. Midsole: 7mm thick 45C closed cell EVA foam. Outsole: Flex-Grip is non-marking, draining, super flexible, razor siped, and has 3 mm lugs. Made with G.15; our sticky, high abrasion compound. Foot to Ground Distance: 12mm heel, 11mm ball.