Compatible Design Replacement silicone band designed to fit the Google Fitbit Air tracker/watch. It is not an original Google or Fitbit product. Soft Silicone Comfort Made from smooth, flexible silicone rubber for daily wear, workouts, walking, and casual use. Adjustable Fit Easy-to-adjust wristband with a secure metal buckle, suitable for most mens and womens wrist sizes. Sport & Daily Use Lightweight, sweat-resistant, and comfortable for the gym, running, office, and everyday activities. Easy Installation The simple replacement strap design allows quick changes between colors and styles