Speedo Fastskin LZR Racer X Openback Kneeskin Kids Black SwimwearDesigned for young athletes. Feel unstoppable wearing Speedos Junior LZR Racer X. Developed by swimmers for swimmers. Increased compression streamlines the body while support seams hold you higher in the water making you feel your fastest. Features: Bonded inner core liner construction, for greater stability and improved body position Silicon gripper on leg hem for both comfort and secure fit Flat seam construction, follows the lines of the adult LZR