Replacement armband for Fitbit Charge 3 or Fitbit Charge 4 series fitness trackers, soft, breathable, sweatproof and lightweight, idea for anyone who want to wear fitbit charge 3/ charge 4 series tracker on the upper arm instead of on the wrist. <br><br> USER GUIDE:<br> 1) Remove your current watch band<br> 2) Lock the armband connector on the charge 3 or charge 4 series fitness tracker<br> 3) Pull your wrist through the armband, move it to your upper arm where you feel comfortable and natural<br> 4) Unfold one of the hook-and-loop end fasteners and adjust the strap to fit your arm snugly<br> 5) Fold over the hook-and-loop end fastener and close it<br><br>Attention: <br> Please do not wipe the strap with alcohol or any liquid may contains alcohol, as it may damage the glue of the strap and cause the strap fall apart.