Mirah June Kids' Rechargeable LED Light-up Sport Shoes Fashion Sneakers PU Leather Rubber sole Size: Measure foot length and add 1cm, that is the suggested size Charging: Charge the shoes when the lights get dark; Charge for 2-3 hours and the lights can last for 7-9 hours Do not charge for more than 3 hours, or the battery can be damaged The lights will flash when you turn on the switch button Package include: 1 pair of LED sneakers and a cable