Material: Reflective PVC Size: One size Color: Four colors 1. The high-brightness reflective material can significantly improve the recognition of riders even at night or in low-light environments, ensuring safe travel. 2. The warning triangle sign designed specifically for bicycles complies with international safety standards, effectively improving visibility and reducing accident risks. 3. Innovative integrated hook design, easy and firm installation, can be quickly fixed without additional tools, suitable for all types of bicycle frames. 4. Waterproof and scratch-resistant, adaptable to a variety of complex weather conditions, and maintain high reflective performance for a long time. 5. Applicable in multiple scenarios, not only suitable for cycling enthusiasts, but also for outdoor activities such as hiking and running, protecting your safety at night in all directions. Package Includes:1pc Bicycle High Brightness Reflective Sticker