They've "Astral-ized" the beloved flip-flop. Meet Filipea |.Astral uses sticky GA(R)Rubber on outsole and footbed to seriously reduce foot slippage. They instantly convert into a "sandal" (that's crazy!!) via a simple accessory strap. Hike, swim, climb a dune, run around, whatever! We think this is the ultimate flip-flop.Intended Use: Casual, Water, Boat, Travel, TrailUppers: Cushioned Synthetic leather with embroidery and emboss details. Soft, wicking knit liner, reflective star at center and soft nylon webbing toe post.Midsole: Dual density EVA with G.15(TM)rubber pods at footbed.Outsole: Super-grippy, non-marking and siped. Made with G.15(TM) compound.Ankle Strap: 15mm polyester webbing with acetal ladder lock.Weight/shoe: Men's 9 = 178g (6.272 oz)Sizes: Men's US 8-13 (Whole sizes only)Fit: True to size (For half size, size up)