MIZUNO Top Competitive Swimsuit GX/SONIC 6 NV Half Spats Compression Model (NV). WORLD AQUATICS (International Swimming Federation) approved. Mizuno’s top lace swimsuit GX/SONIC series equipped with flat swim technology. Cross-shaped support line design links stroke and kick and provides kick support to hamstrings. Slit nylon thread improves water repellency Sonic Light Ribtex UW-II. This race swimsuit is made of fabric material and has a tight fit. Body: 65% nylon, 35% polyurethane. Switching part: 66% nylon, 34% polyurethane. Lining: 65% nylon, 35% polyurethane. International Buyers – Please Note. I do not mark merchandise values below value or mark items as “gifts” – US and International government regulations prohibit such behavior.