This liner is made of PUL (polyurethane laminate) that diaper covers and AIO diapers use for the waterproof layer. They are perfect for keeping in your diaper bag or in the car.
There is soft elastic around the top to keep the bag snug on the pail and a loop to close the opening snugly while you take it to the laundry. It is washable so you just put it in with your diapers. These bags are also great for using as a bag for wet swimsuits, laundry, etc.
Measurements are: 9" wide (18"around) X 15" tall