Compatible models: the elastic nylon sports loop bracelet only compatible with Fitbit Charge 5 bracelet for men and women. Flexible design: the elastic Fitbit Charge 5 watch strap has a movable buckle, the Charge 5 bracelet loop can be easily adjusted to your wrist size. Suitable for most women's and men's wrist size: 5.5 inches - 9.8 inches (140 mm - 250 mm). Elastic Charge 5 bracelet Charge 5 Armband 01 Soft material: our adjustable elastic Charge 5 bracelet for women made of super stretchy soft nylon material, breathable, comfortable, durable, skin-friendly and tight fitting without constriction. The super elastic material makes it easy to put on and take off all day long. Safe and easy to install: this sports nylon loop Fitbit Charge 5 replacement strap has been subjected to strict quality test, and the plug can be perfectly and firmly locked into the Charge 5 device without having to fall off. Easy to install and remove in seconds without tools.