"Peel Ply", also called "Release Fabric", is a synthetic cloth that you drape over a surface coated with epoxy resin. Once cured, you can peel off the fabric, and what is left behind is a perfectly smooth surface, ready for a quick sanding or for the next round of epoxy. No runs, no shrink-back, no low spots. Composition: 100% high-tenacity Polyamide 6.6. Peel Ply fabrics are used to manufacture a wide range of products for aerospace, marine, recreational and other industrial applications.