The item is made of high quality materials, which is stretchable and durable to use.This LED safety light with reflective strap helps improve visibility and safety at night, which makes running, walking, cycling and other outdoor sports at night safer. Features:1. Made of high quality materials, which is stretchable and durable to use.2. This LED safety light with reflective strap helps improve visibility and safety at night.3. Just tie it around your arm, wrist or lower leg, press the switch button and you're ready to go.4. Suitable for night outdoor sports, such as running, cycling, trekking, etc.5. Come with adjustable strap, can be tied on arm, wrist, lower leg or anywhere you like.Specification:Condition: 100% Brand NewItem Type: LED Arm StrapMaterial: TPU + ABS + ElasticColor: Red, Blue, Green(Optional)Full length: Approx 31 * 3.8 cm / 12.2 * 1.5 inLED light bar size: Approx 19 * 3.8 cm / 7.5 * 1.5 inReflective Body: microprism type reflectiveLuminous distance: visible 200 meters awayCold resistant: -30Heat resistance: 80 degrees CelsiusBattery: 2032 button battery(Included)Weight: Approx. 46 g / 1.6 ozPackage list:1 * LED ArmbandNote:The arm band cannot be washed with water..