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 filmIPX8 rated - waterproof press-to-lock seal3 sizes per packRecommended by Ordnance SurveyDimensions: 152 x 279mm / 305 x 305mm / 229 x 349mmQuantity: 3