Shamrock Tie-Dye Mg 6 Pk 120mm RoundPro Form Mouthguard Tie Dye Laminates. 160 (4mm) Shamrock Round 120mm 6 Pkg The Pro Form line boasts Tie Dye designs to the extensive line of mouthguard materials. The Tie Dye Laminates are made the same way all Pro form 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. All of these features make the Pro form mouthguard