Hyperflex Wetsuits Men's Voodoo 1.5mm Short Sleeve Pullover Jacket Neoprene Atomic Foam - Super Stretch Neoprene infused with a higher count of air cells achieving a warmer insulation rating for the same thickness and weight Board short Loop elastic strap located on the waste that attaches to board short which prevents top from riding up in the surf Flat lock Seams - a low-profile seam which offers comfort, flexibility and well-suited for 3/2mm water temperatures