Features: Help your child learn to ride a bike with these LED flashing wheels. They provide stability and confidence, allowing kids to feel secure while riding. These wheels are made of PU+metal+plastic materials, ensuring durability and long lasting use. The non slide and quiet design offer a smooth and secure riding experience. Designed for children who are learning to ride, these wheels are perfect for improving balance and control. They are suitable for various outdoor settings, making learning to ride a bike a fun and enjoyable experience. They are not only great for home use but also suitable for schools and bike clubs. Specifications: Material: PU+metal+plastic Color: Black/Red/Pink/Blue Size: 12inch/14inch/16inch/20inch (details shown in the picture) Package Includes: 2x Bike Auxiliary Wheels note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.