Sole: Synthetic. The roller shoes was designed with a switch to control the lights on/off, which is hidden inside the shoe and can be worn as a normal shoe during the day.Flashes once it vibrates. The light-up LED shoes is rechargeable. Wheel material: PU. Wheel type: double wheel. When you need it to be a sport shoes, the front wheels could be removed, and the behind wheels could retractable.Multi-function. Waterproof LED light, vibration flashing. Occasion: Our LED roller skates shoes feature upgraded LED strips and adjustable wheels, ideal for skating/ party/ disco/ dance/ birthday/ christmas. It is your best choice for footwear for any occasion you want to be noticed. Heel Type: Anti-shock PP impact shell has no odor to protect your baby's tender feet. These skates are great - high quality, comfortable to wear - stylish style. Your baby can also wear them without wheels - super cool and easy to learn to roll. First Why many parents choose this shoes as a gift? It can exercise the child's physical coordination ability and promote cerebellar development. From a psychological point of view, the process of learning roller skating can be a challenge for most children. If the parents guide them properly, it can be very helpful in cultivating children's self-confidence, and it can also make children make more friends. Of course, this is a great gift for lovers and kids for birthday, performances, Halloween,Thanksgiving and Christmas Day and other celebration. Why Kids love this shoes? Easy to be Wheel shoes, very convenient. Colorful LED light,Can charge with USB charge cable. Multifunctional shoes can become two styles shoes： roller shoes or flat sneaker. So on any occasion, you don't have to carry any other heavy skateboards, roller skates or other like, and No need to waste time to change.when you own this shoe, just put it on, arrived a safe place, and press the button to pop the wheel,Then immediately start to glide. Description of shoe size selection: Please refer to the last size chart to have selected the appropriate size. Notice：If your kids have wide and thick feet, we suggest you to choose one size larger one for him/her. Shoe care instructions: Shoes can be cleaned by soft fabric, BUT DO NOT WASH AND STEP INTO WATER or DIRT. Please don't use it on rainy days. Please don't tear the led wire of the shoe forcibly. To make your shoes last longer, please use them on smooth roads or at home. Brake instructions: first control the speed to make the speed down, and then use the forefoot brake. This will avoid serious wear on the shoes.