XUEMEI Material:; reflective running armbands are made of comfortable elastic fabric and reflective material, reflective strips reflect in all directions, comfortable and adjustable Size: reflective running armbands unstretched length is 35 cm, stretch up to 50 cm/19.7 inches, reflective wristbands wide is 4 cm, stretched will fit over most people Design: reflective running armbands is designed with 2 cm reflective strips and velcro, reflective strips reflect in all directions can help you be spotted at night, adjustable bands easy to fasten and release with velcro Easy to use:; reflective running armbands can easily be fixed onto the ankle, upper arm, or wrist in just adjustable velcro, they are very lightweight you wont notice they are there, offers you optimal comfort Application: reflective running armbands can be as wristbands, armband, leg straps, accessories for sports, running gear, good for running, jogging, cycling, walking, motorcycling, horse riding, hiking, dog walking or any activity performed at night or the early morning Quantity delivered: 4 pieces Product color: green Product size: 4*35cm