The case is made from a durable nylon fabric with a double sided touch friendly window, making viewing and protecting your maps & paperwork a doddle.It\'s waterproof up to 10 metres for 30 minutes, meaning it easily prevents water, sand, and dirt from getting in. Insert your belongings into the case and have peace of mind knowing that they\'re safe and secure.Waterproof fabric with welded seemsZip lock plus hoop and double closure sealWaterproof up to 10 metres for 30 minutesCrystal clear touch friendly window, can easily be used with a tabletIdeal for OS maps and devicesInside the border dimensions: 28 x 28cmTotal product dimensions: 33 x 33cm