The HyperFreak F.U.Z.E. (Chest Zip) is made of our Recycled TechnoButter 3 and TB3X neoprene containing 90% or more recycled fibers in the liner fabrics. This exclusive technology weighs 20% lighter with 30% less water absorption than any other premium neoprene. Minimal seam design, lightweight, quality construction, and attention to detail make the HyperFreak Series another team-inspired favorite. F.U.Z.E. Closure Minimal Seam Design 360 degree Anti-Flush Barrier with Drainholes (F.U.Z.E.) Recycled Oyster Shells and Eco Carbon Black Infused Neoprene Recycled Dope-Dyed Yarn Jersey Aqua Alpha Solvent Free Neoprene Lamination Key Pocket with Loop Recycled TBX Fully Taped Glued and Blindstitched Seams Full Body, Legs: Recycled TechnoButter 3 Arms, Shoulders: Recycled TechnoButter 3X PLUS (+) = 0.5mm Extra thickness for even more warmth Proposition 65 Warning for California Consumers: This product can expose you to Chloroprene which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov