These waterproof map cases are waterproof to 10 metres and are made from resilient triple polymer film which close simply with an airtight press-to-lock seal. Made from durable triple polymer film IPX8 rated - waterproof press-to-lock seal Touchscreen compatible - ideal for phones/tablets Recommended by Ordnance Survey 3 sizes per pack Dimensions (Case 1) 152 x 279mm Dimensions (Case 2) 305 x 305mm Dimensions (Case 3) 229 x 349mm