Waterproof Smartphone PouchFeature: The use of new high security performance waterproofing system. Less than 20m depth waterproof guaranteed Please make use of the first test to check for damage Double layer protection: neck hanging type and the mountain type It can float. So, you do not have to worry about when it falling into the water. Item can contain for iphone 4, for iphone 5,forSamsungGalaxy S3 S4 S5,for HTC M7 M8,the all cell phone's size under 5. 5" Using a temperature