【ADJUSTABLE ROLLER SKATES】The kids roller skates come in four different sizes which is adjustable to grow with your child, so kids can use it for a long time even though their feet are increasing. Three sizes are available:S(10C-13C)/ M(1-4)/L(5-8),please check out the image of our size chart for specific length of the boot. 【SAFE COMFORTABLE】 The roller skates are made of durable frame,polyurethane wheels,ABEC-7 speed bearings and breathable honeycomb upper,triple protection closure.Roller skates are well balanced and have a high cuff for added support,padded liner offers a soft and snug fit.The roller skates give exceptional stability alongside a smooth and easy ride, give kids more confidence and learn faster. 【CHILDRENS FAVORITE】 8 Wheels Illuminating,Colorful lights inside with self-generating power and no battery needed.Coolest flashing light offers more fun for kids when they skating,makes them to be a real shining star.The skates wheels roll quietly and smoothly,the kids will be sure to fall in love with them. (Tips: Please check and tight wheels regularly to prevent them falling off.) 【PERFECT HOLIDAY PRESENT FOR KIDS】Roller skating is a very popular sport.Especially for those who are new to skating, kids roller skates have a durable shell, the frame has a lower center of gravity for extra stability, all that make it easier to learn how to skate. 【DEVOTED CUSTOMER SERVICE】 We recommend that it be replaced once every 12 months. We have confidence in our roller skates. What we pursue is that children have a satisfactory experience. We remain at your disposal if you have any further questions.