Features: USB Rechargeable: Can be charged via USB cable for long-term use. No battery replacement needed. 3 Modes: Fast flash (press once), slow flash (press twice), steady on (press three times). Button control for easy operation. Waterproof Reflective Strips: High-visibility reflective material for improved night visibility. Suitable for various outdoor activities. High Brightness: LED strips on front and back provide visibility up to 300 meters. Elastic Fabric: Stretchable, snug-fit design with adjustable buckles. Fits both adults and children. Notice: Actual color may vary slightly due to screen display and lighting. Allow 1–3 cm variation due to manual measurement. Product Specifications: Elastic band width: 4 cm Reflective film width: 1.5 cm Weight: 145 g Waist circumference range: 64–105 cm Shoulder height range: 33–46 cm Color/Style: As shown in picture Package Includes: 1 x Vest 1 x Charging Cable