Color: As shown in the First image. Quantity and size : As shown in the title or description. Elastic Led Cycling-vest Adjustable Visibility Reflective Vest Gear Stripes Features: 360 Degree Reflective Material, No Blind Angle when Lighting by Car Headlight, Protect the Safety of Users With 4 LED Light at Front and Back LED Has a Hard-shaped Lampshade, Waterproof, Protects Lamp from Damaging High Brightness LED, Front and Back Independent Dual Control Switch, Press Switch Three Lighting Modes, Fast Flah, Slow Flash, Continous Light With Steel Button, Easy to Use, and It Can Be Rotate Elastic Band Vest, Fit Your Body Well, Great For Outdoor Night Sport Features: Material: Reflective Lattice + 3.8cm Elastic Band Vest Length: Approx 30-43cm / 11.8-16.9in Waistline: Approx 70-100cm / 27.6-39.4in Application: compatible with Night Running Safety Protection, Night Running Crowd, Cycling, Acting Driving, Etc Reflective Material: Highlights Reflective Micro Beads Reflection Distance: Visible 200 Meters Away from the Car Headlights compatible with People of Weight: 35-85kg Battery: CR2023 (front, Back) LED Light: Front 4 LED, Back 4 LED Package Includes: 1 * LED Reflective Vest