EUC. Worn once in water only. Made of thin and flexible natural rubber with a nylon lining and drawstring for frictionless wear, it has a durable resilient synthetic rubber sole and weighs no more than a bottle of water. Waterproof natural rubber with nylon lining | Pair weight: 1.2 lbs | Reinforced sole with textured tread | Nylon collar with drawstring | Nylon carrying bag with elastic compression straps, drawstring and carabiner. This pair of lightweight waterproof boots easily fit into a backpack, or straps onto one with its integrated carabiner-bearing pouch. This are marked LL but they run small to me. More like a 10. POKEBOO SIZE GUIDE SS (US Men 4 - 4.5) (US Women 5.5 - 6) S (US Men 5.5 - 6.5) (US Women 6.5 - 7.5) M (US Men 7 - 7.5) (US Women 8 - 8.5) L (US Men 8 - 8.5) (US Women 9 - 9.5) LL (US Men 9.5 - 10) (US Women 10.5 - 11) 3L (US Men 10.5 - 11) (US Women 11.5 - 12) 4L (US Men 11.5 - 12) (US Women 12.5 - 13.5)