SLEVEL LED Light up Shoes USB Flashing Sneakers for Kids Boys Girls(37Black9) When received the shoe and found the shoes light is not lit, please charge your shoes battery,when charging,slowly pull the plug and note the front and back of the connector. Our LED shoes your can wear them on multiple occasions with no problems,it is safety even on the rainy day.The shoes sole are waterproof,but we do not suggest you wear them on any occasions with water so that the light can be used for a long time. Each pair of our LED shoes has been subject to strict quality inspection, but can not ensure the damage in transit,If you receive a defective product,as long as you give us a chance to help solve your problem,Thanks in advance!