Compatible with Models The adjustable elastic Fitbit Charge 4 bands are Compatible with Fitbit Charge 4/ Charge 3/ Charge 3/4 Special Edition Fitness Activity Tracker, Personalized your Charge 4 Fitness with this refined replacement straps. Package Included with 3 X Replacement Elastic Bands for Charge 3/4 (Fitness Activity Tracker DO NOT included) Adjustable Size The elastic scrunchies Fitbit Charge 3 bands design with adjustable copper buckle allows you to adjust the size of the loop band to your liking, you don't need to worry about buying wrong size. The wristband sizes fit 5.2in-9.8in (132mm-228mm) wrists. Please measure your wrist for a perfect fit before buying Premium Material Oumi elastic Stretchy Fitbit Charge 3 bands are made of latest elastic woven nylon material, very comfortable breathable and light to wear and easy to wash, It feels soft touch and will not harm your skin. There is a variety of popular colors that set off your skin, matching your different clothes, whether it is sports or work and leisure. The Fitbit Charge 4 bands for women men can ensure a uniform comfortable and durable fit Easy to Install The Charge 3 bands comes with connectors that are easy to remove and install, and which click precisely and securely onto the your Fitbit Charge 4 or Fitbit Charge 3 tracker interface. Easy to install directly and remove with one button