Large zip bag (11 inches x 9 inches) is made of water resistant vinyl and has a small wristlet strap to easily take on-the-go. The waterproof material makes this travel bag perfect to store wet swimsuits after a beach/pool day or to use as a travel toiletry bag to protect from any spills Smaller nylon zip bag measures 6 inches x 7.75 inches and is the perfect size to hold cellphones to protect them from the sand