NIKE Free Rn (Big Kid) 100% synthetic-and-leather Imported Rubber sole Shaft measures approximately 2.25" from arch Breathable mesh bootie upper uses Flywire cables to create a secure, locked-down fit Low-profile midsole and rounded heel encourage a natural footstrike and running gait New tri-star outsole pattern expands on impact and contracts at toe-off, moving with your stride while providing flexible cushioning and durable traction