The Teva Numa is a supremely comfortable & secure water sandal that is equally at home on the l&. All the materials are synthetic to absorb minimal water, dry very quickly & have multiple adjustment points to get a custom fit. The lightweight EVA Foam midsole provides cushioning & comfort & sits on top of the superb Durabrasion Rubber sole that grips like the preverbal to wet & dry environments. Embedded in the midsole is a Shoc Pad heel unit that absorbs impact shock & increases comfort, so youll have no excuse not to go jumping in. In true Teva Style they have embedded the sole unit with a nylon shank for added stability. Durabrasion Rubber will give you durable traction. A nylon shank keeps the foot stable & in control. Open toe construction doesn’t allow water to pool. Synthetic Upper. Multiple points of adjustment allow for the perfect fit. A contoured EVA foam midsole gives you lightweight comfort & support. Shoc Pad in the heel gives you serious shock absorption.