4/3mm XY Back Zip Wetsuit for women from ROXY. Special features include: Fit: Long sleeve steamer, entry: Back zip, thickness: 4/3mm, f'N Lite neoprene: 16% lighter this neoprene is packed with air cells for the lightest of lightweight warmth, and a composition of 92% Nylon/Polyamide, 8% Elastane. Size: 10.