Pellon Flex-Foam is a lightweight sew-in stabilizer consisting of a layer of foam sandwiched between two layers of soft fabric. It is excellent for use in crafts, accessories, and home dcor projects for an elegant finished look. It can be used in place of or in addition to other stabilizers. Flex-Foam is a breeze to sew through and adds shape and body to projects such as computer cases, eyeglass cases, purses, tote bags, cup holders, diaper bags, and more! It is compatible with a wide variety of fabrics. 100% Polyester Fabric Outer/100% Polyurethane Inner Non-Woven Sew In Weight: Medium Single Sided Washing/Drying instructions: Machine wash warm on gentle cycle, tumble dry low or dry clean.