HUSK'SWARE HUSKSWARE Multi-Color LED Lighting Shoes With USB Charging For Little Kid/Big Kid Synthetic Post-sales Service: We promise that you will be shipped a new pair of shoes fast if the shoes led light is not work within three months. Using Instruction:There is a switch on the inside of the shoe close to where the usb connection is. So you have a chose one of 14 color for lights along with turning them completely off. Do not wear this shoes when you do strenuous exercise lest damaging Charging Instruction: Slowly plug in and pull the Usb line while charging. The led shoes can be used 7 to 9 hours when charging 2 to 3 hours. Do not exceed 10 hours charging time lest the led light is broken. Size: Please measure your foot length and choose size according to the size chart. Shipment: It needs about 10-20 days to arrive to your address normally if they are shipped from China.