The Travel Club - TRAVELON WATERPROOF POUCH keeps your digital camera/smart phone dry. Its foam insert allows the pouch to float on water's surface. It has a removable carry strap too.
The One Little Thing: Waterproof Travelon Pouch • Her Packing List
Travelon® Large Waterproof Phone Pouch | Eddie Bauer
How to correctly use your Travelon® waterproof phone pouch. #12505 - YouTube
Travelon Clear View Waterproof Pouch, For iPad and Other Tablets | eBay