Billabong Foil Back Zip Steamer 3/2 - Black A surf essential with engineered quality, the Billabong 3/2 Foil Back Zip Full Wetsuit hits all the marks. Featuring premium, lightweight neoprene foam and durable Superflex fabric with silicon stretch, this men’s long sleeve wetsuit is constructed with stitched seams for the ultimate fit. Finished off with a back zip entry for a classic look throughout.