This durable, waterproof bag has a soft and silky exterior made with a fabric called Lustra (a Cotton blend) and an interior made with SOFlux: a waterproof breathable, fluid proof, cleanable fabric (commonly used in hospitals) that does not crack like other vinyl fabrics. The Sneaky Sack is resistant to bacteria growth, allowing products to remain clean and germ-free. Each Sneaky Sack provides internal pockets for separating contents to keep items from accidentally damaging one another while providing better organization. Hides Stores Items From View Does Not Make Noise When Clothes Are Moved Machine Washable. Durable Multiple Storage Pockets For Organization Pockets Keep Products From Damaging Each Other Can Be Locked For Increased Security (Lock Not Included) Hides Even Large Items Double Layered - Very Strong For Heavy Items. Will Not Rip Bag. Waterproof- To Store Personal Lubricants, Massage Oils, Etc. The best way to store the Sneaky Sack is to place it on a hanger and to store it discreetly under some clothing such as a sweatshirt or coat. This bag is designed to hang below necklines of clothing and disappear from view. A dark sweater, coat or sweatshirt is best for the most discreet placement.