New Mizuno GX Sonic Royal PW (Power) Engineered for Elite Performance. High Compression: Maximum compressive material strategically placed to optimize buoyancy, streamline body alignment, and deliver a locked-in feel. Recommended for sprint events. World Aquatics Approved: Approved by World Aquatics for national and international swimming competitions. World Aquatics approved racing swimsuits have a unique FINA barcode printed on the swimsuit, making it easily identifiable to swimming officials. Sonic Line Design: Enhances your kick with strategically placed support tape and lining along the hips, thighs, and inner thighs for optimal stability and comfort. Sonic Light Ribtex UW: Material designed for ideal speed conditions under water. Each panel is built with increased water repellency and compression. This engineering assits with a tight body line and increased hip elevation throughout the race. Flat Swim Technology: Enhances a swimmer's flat body line in the water.  Having a flat body line mimics streamline position, the fastest, most hydrodynamic swimmer's position.  Leading to low water resistance and good propulsion efficiency.