1、Small size, easy to carry, simple and fashionable appearance, wearing light and comfortable, close-fitting, adjustable elastic band. 2、With a good reflective distance, the maximum visible distance is 200 meters, more conducive to your night riding, also enhance safety. 3、Cold resistance, can work normally under -10 ℃; High temperatures, up to 80 degrees Celsius, do not interfere with its normal operation. 4、Suitable for outdoor sports, night running, cycling and other sports activities. 5、Hand washable, remember to take off the led groups before wash. Condition: 100% Brand New Item Type: Led Reflective Vest Material: TPU Light optical fiber Color: As Pictures Shown Product Size: Children Type, SLED controller: dual box independent control Number of leds: 4pcs Battery: 3V 4pcs (including) Reflective material: 5CM wide reflective elastic band Waistband Size: 2.5cm/1.0(width), Waist: 40-80cm/15.7-31.5in (adjustable) Optical fiber Size: 3MM/0.1in( diameter), 100CM/39.4in(length) Washing: hand washable (after removing the LED group) Reflective distance: visible from 200 meters away High temperature resistance: 80 ℃ Cold tolerance: -10 degrees Weight: Approx. 150g 1x Led Reflective Vest