1mm XY Bikini Racer Spring Wetsuit for women from ROXY. Special features include: Fit: Racer back one piece, entry: Back zip, thickness: 1mm, 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: 14.