She's moving and changing. You'd better keep up! Features RealFlex outsole design - 76 individual sensors that allow for multi-directional flexibility and optimal foot feel as you run, jump and stretch! Single layer polyester mesh upper for support, comfort and breathability. Form-fitting design and sock-like feel keeps shoe in contact with the foot. Ortholite® textile lining with a removable PU sockliner for your convenience. Low-profile, low-to-ground midsole for great fit, feel and added mobility. 3D Ultralite outsole provides lightweight support while encouraging natural footstrike. Measurements: Weight: 3 oz Product measurements were taken using size 9 Toddler.