ProForm Tie-Dye Multi-color Mouthguard Laminate, Assorted - Patriot, Wilderness, Midnight, Shamrock, Flamingo and Rainbow, 6/Pk. 5' x 5' .157' (4mm) Vacuum Forming EVA Material. Made the same way all ProForm laminates to ensure the long-proven quality and protection athletes of all levels need. By laminating two layers of soft EVA together, the material has excellent tensile strength. Box of 6 sheets