Reflective warning arm with bracelet. The reflective armband itself does not emit light, and it only has a reflective effect when illuminated by light. Specification: Material: high quality polyester + strong reflective coating Color: green, orange, rose red, blue, green parallel bars (optional as shown) Weight: 15 g One bar: Bandwidth: 4 cm / 1.6 inch, total length: 35 cm / 13.8 inch, reflective strip width: 1.5 cm / 0.6 inch (adjustable) Two bars: Bandwidth: 5 cm / 2 inch, total length: 38 cm / 15 inch, reflective strip width: 1 cm / 0.4 inch (adjustable) Specifications: A variety of colors, free to choose. Highly reflective material for a safer workout. The elasticity is adjustable, firm and comfortable. Velcro design, easy to wear and easy to take. Flexible design, can be adjusted as needed. The color is beautiful and the night effect is very good. Good permeability, both running and cycling. It guarantees your safety when you run at night. Package Included: 1*Safety bracelet Notes: 1.Due to the difference between different monitors or the lighting during photo shooting,Photos may be slightly different from actual item in terms of color. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation.Thanks! Thanks for your understandings.