The Restop?? 1 four-pack contains 4 disposable urine bags. Restop 1 is also sold as a two-pack containing 2 disposable urine bags. Each bag contains super absorbent polymers and enzymes that will absorb a full 20 ounces of urine. The wide opening with semi-rigid rim allows for easy use by men or women. The one-way valve prevents spillage should the used bag be accidentally dropped. Restop contains the odor as well as the waste. Deodorants are added to the polymers to eliminate odors. The Restop 1 is a quick, convenient and environmentally friendly way to answer natures call.