ProForm Glitter Guard Mouthguard Laminate - Pink, 6/Pk. 5' x 5' .157' (4mm) Vacuum Forming EVA Material. Adds a bit of sparkle to the Pro-form lauded line, which delivers protection, affordability and style. By laminating two layers of soft EVA together, the material has excellent tensile strength. Fun Guard Mouthguard Sheets help you make one-of-a-kind appliances with ProForm quality and consistency. Box of 6 sheets