.160 (4mm) Blue Round 120mm – 12/Pkg. 160 (4mm) Blue Round 120mm 12 Pkg Our Pro Form Mouthguard Laminates are the only pre made laminated mouthguard material in the industry. The Pro Form material has long been considered the leader in custom made mouthguards. By laminating two layers of soft EVA together, the laminate has excellent tensile strength. All of these features make the Pro Form mouthguard laminate the material of choice for custom made mouthguards. Features: Available in .