Wilson Kaos Junior Quick Lace Barrier Reef/Navy Blazer/Lime Popsicle The Wilson Kaos Junior provides speed and flexibility for young tennis players. Co-patented with Salomon, this tennis shoe uses Quicklace technology for one-pull tightening and easy on-off capabilities. Showcase your speed in style with a cool and modern look from the Wilson Kaos Junior! Shoe Technology Upper: Quicklace features minimalistic, strong lace for one-pull tightening and easy on/off capabilities. FS supplies forefoot support to stabilize footwork. Midsole: R-DST provides cushioning and rebound for comfort and responsiveness. DF2 provides a cushioned court feel, yielding compromise between comfort and performance (DF2 = HT Drop 9mm). Outsole: Duralast rubber compound provides abrasion resistance and maximum traction on all surfaces.