Billabong Women’s Short Sleeve Wetsuit for surfing, swimming, snorkeling and SUP! 2mm thickness. No rips, holes or pulls and perfect for travel! Delivering on performance, style, and value, the 2/2 Synergy Back Zip Short Sleeve Spring suit is made with a recycled Superflex Jersey exterior and premium Superlight Foam neoprene, a lightweight foam partially made from recycled materials. Back zip, women’s size 4.