Flat seams on the toe of the sock to avoid friction on the skin

supportive fabric and reflective highlights for visibility in low light conditions

Three innovative technologies power your run: A double dose of Air Zoom units helps launch you into your next step

and weight

Kids Mizuno Enerzy Rider Jr Size:4.0 Flat seams on the toePROPULSIVE GEOMETRY: A fully connected outsole delivers a fast and fun transition, while also increasing stability and durabiliy. AIR MESH UPPER: Lightweight Air Mesh upper hugs the foot for a secure and comfortable fit. COMFORTABLE CUSHIONING: A full midsole of MIZUNOENERZY foam junior runners with long lasting comfort and durability.