Kizik Athens Kids Slip-On Tennis Shoe Worn Maybe Twice - Excellent Condition. Size 11C From the website: Easy on for the kid who’s always on the go. The Athens has Kizik’s unmistakable spring-back Cage™, plus Rabbit Foam® outsoles that bounce back for cushy walking. Plus, it stays on for all that jumping, running, climbing, and all-around kid stuff.