Widened and stable The auxiliary wheels are widened to enhance stability and prevent rolling, delivering a safe and balanced riding experience for children on 14, 16 and 20 inch bicycles. Magnetic luminescence The PU flash wheels use magnetic luminescence to create a fun and vibrant look. No batteries are required, making the lighting effect convenient and environmentally friendly. Quiet and comfortable Made of PU material, the wheels are thickened and wear-resistant to provide a silent, smooth ride. Children can enjoy their rides without disturbance. Easy to use These bicycle auxiliary wheels are easy to install and remove. They are compatible with a variety of baby bikes and can be quickly attached. No complicated installation process is required. Specifications and compatibility - Size compatibility: suitable for 14, 16 and 20 inch children’s bicycles - Material: PU - Wheel design: thickened, wear-resistant, with magnetic luminescent lighting - Function: widened support for increased stability and safety Use scenarios - Learning to ride: When a child is practicing balance on a 14, 16 or 20 inch bike, the widened auxiliary wheels provide extra stability to reduce fear and help build confidence. - Daily rides: For rides on sidewalks, parks, or urban areas, the quiet, wear-resistant PU wheels offer a smooth and peaceful experience for both child and parent. - Shared bikes and quick swaps: When using multiple bikes of different sizes, the easy attachment and removal enable quick transfers without tools, making it practical for families with several young riders.