Hand Crafted Reusable Bowl Covers Set of 3 Sizes 12”, 9” & 6” Machine Washable The inside is lined with a layer of PUL Polyurethane Laminate. PUL is approved by the Consumer Product Safety Commission. PUL can be used for raincoats, bibs, diaper coverings etc. These are a good substitute for plastic wrap! These are not microwave safe! Custom Orders Welcome!