Keep your essential belongings dry! Poolside, at the beach, in the rain ... it doesn't matter! The bag is made of RPET material (recycled plastic bottles. Interior phone sleeve keeps your mobile device front & center. Stays securely closed with a strong plastic buckle. Attach to a backpack or other items with the included plastic lobster claw attachment. Holds the equivalent of 2.5 liters. 7 1/4" W x 11" L