Easy to install: Reflective flag can be attached to the rear axle of the bicycle. Simply loosen the wheel nut, insert the flag, and tighten the wheel nut. Material: This bike safety flag set is made of PVC flag face, glass fiber pole, iron painted metal sheet, ABS plastic, PP buckle, which is tear resistant and waterproof, and can withstand most weather conditions. High Visibility: This kid bike flag is highly visible to passers-by. Helps you keep an eye on your child and stay safe as they ride on the road. Package includes: 1 x pennant, 1 x mount and flagpole. Each flag pole is divided into 5 sections, allowing you to adjust the height as needed. Applications: The flag is suitable for attaching to bicycles, axles, or pannier racks. It can also be used on trailers, scooters, or carts. The safety flag is highly visible. When children's bicycles are equipped with the safety flag, drivers can quickly see and react, helping ensure children's safety at all times. Adjustable design meets various needs. Color: Red Material: Plastic Package Contents: 1 x Red Stroller Flag Kit Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement allowance is +/- 1-3 cm.