luchila Sparkle Adjustable Performance Inline Skates with LED Light up Wheels Aluminum Body Beginner Skates Fun Illuminating Roller Skates for Best Gift for All Kids, Boys, Girls and Adults. ★【 MAINTENANCE 】 : 1. To maximize the lifespan of your skates, rotate the wheels every 4 week 2.Lubricate the bearings every 4 weeks to ensure a smooth ride 3. Use Allen key to rotate the wheels 4. Use a damp cloth with soap to clean the outer surface ★【 PRECAUTIONS USE 】 : 1. Adjust to the size of your child's foot. The length of the skates can be easily extended or shortened by holding down the “PUSH” button and grasping the toe. 2. Always wear full protective gears (such as wrist guards, elbow pads, knee pads, and helmet) while skating. 3. Wear a sliding protector gears for kid safety. Young children need to ride under the supervision of an adult. 4. Avoid skating on wet, oily or uneven surfaces and avoid skating on a packed road. 5. Do warm-up exercise before skating. ★【 SPECIFICATIONS 】 : Color: Black & White