Features:

Ultra brightness in the dark: this armband is glow with led& tpu light-guiding tube inside the thin nylon fabric, powered by cr2032/cr2016 replaceable batteries, very bright in the dark and nighttime activities. keep you be seen& be safe at night for you, your children or your pets.

One size suit for all: the length of this armband is 9-16”, also with elastic bands, that you can adjust it by the buckle to suit for different sizes of arms. no matter kids or strong bicep men, it’ll be all ok.

Lightweight& easy to wear: just wear it on your arm, and fix by the release buckle. it’s very light that you’ll not feel uncomfortable to wear it when you’re running, cycling,ect.

Includes: 

1 / 2 * sports wristband