The Billabong Women's 302 Launch Back Zip Steamer Wetsuit is an epic way to launch yourself into the surf knowing this suit has you covered. This suit allows you to perform at your peak with Billabongs durable Superflex neoprene and Superlight foam! In today's wetsuit world there's a big trend towards chest zips, in part because it's suggested that they're stretchier and warmer. The notion of warmth lies in that a chest-zip suit does not let water into the body compartment, via the zip. Back-zips, on the other hand, tend to let water into the suit, however, the Billabong Women's 302 Launch Back Zip Steamer Wetsuit features a water-barrier between your skin and the zipper, this prohibits all zip-induced water from entering the warm, core compartment. Billabong Women's 302 Launch Steamer Wetsuit Features: Thickness 3/2mm: By laying 2mm Neoprene in the 'paddle zones' and 3mm in the non-stretch zones Billabong has optimised the warmth/stretch relationship. The warmer your chest zone the less work your body is doing to retain warmth! Flatlock Stitching: Flatlock stitched seams are the most durable seam, but due to the pinholes created by this stitching it isn’t the warmest style.. Watch our video on wetsuit seams. Durable Superflex Neoprene Superlight foam, partially recycled Interior Fabric: Silicon Stretch Back Zip Entry System High-stress point reinforced melco spot tape