PUL (polyurethane laminate) is a thin, waterproof fabric commonly used for cloth diapering, rain jackets, bibs, and other projects requiring a waterproof barrier. Bright polka dots make this print a fun one for your projects! This waterproof fabric is 55% polyester and 45% polyurethane and is 55" wide. Price per yard. Care Instructions: Hand wash only. Flat dry. Do not iron.