Dry bag

A dry bag is a type of flexible container which seals in a watertight manner.

Dry bags are often used in kayaking, canoeing, rafting, canyoning,[1] and other outdoor activities in which sensitive items would otherwise get wet, as well as extreme sports such as skiing and snowboarding.

They are also used to prevent sleeping bags and spare clothing from getting wet, as in a camping context.

They are often a construction of plastic film, plastic-coated fabric, or waterproof fabric ( Nylon, Vinyl, TPU, PVC and Tarpaulin )which is formed to create an impermeable, waterproof bag.

Construction techniques include welding,(RF or Radio Frequency Welding) sewing (a seam-tape is used to seal over any needle holes) and gluing.