The Hyperfreak F.U.Z.E. (Chest Zip) is constructed with super light TechnoButter 3 and TB3X neoprene. We added 0.5mm thicker material as a step-up from the HyperFreak Comp. The minimal seam design, lightweight, quality construction, and attention to detail make this another team inspired favorite.F.U.Z.E. Closure360 degree Barrier with Drain HolesMinimal Seam DesignRecycled Oyster Shells and Eco Carbon Black Infused NeopreneAqua Alpha Solvent Free Neoprene LaminationExternal Key Pocket with LoopRecycled TBX Fully Taped Glued and Blindstitched SeamsFull Body/ Legs: TechnoButter 3Arms/ Shoulders: TechnoButter 3XPLUS (+) = 0.5mm Extra thickness for even more warmth