Indestructable hydrophobic canvas and stretch mesh uppers Recessed stitching securely connects uppers to rubber outsoles Holes at toe and heel allow water to drain and keeps out debris Nonmarking rubber with razor-siping and low-profile tread Reduced thickness and flex grooves in outsole provide flexibility Best Use:   Watersports Upper:   Canvas Lining:   Air-mesh Midsole:   EVA Outsole:   Rubber Weight:   14.4 oz As advertized! The only water shoe i have ever had that doesnt cut away at my ankles. I literally wore these on and off for 5 days on vacation. Very confortable. Wish they came in half sizes for a bit better fit but honestly a minor inconvenience. Having holes in the toe and heel to drain the water in your shoe is something you didnt know you needed until you own these! 10/10