acrbiutu bands compatible with fitbit charge 4 / charge 3 / charge 3 se, soft silicone breathable replacement sport accessory watch strap wristband for women men acrbiutu <b>feature: </b> <br><br>the fitbit charge 4 / charge 3 / charge 3 se bands are made of pure silicone and flexible elastomer. durable and soft silicone material across your wrist, improves airflow and comfort, bring you a comfortable wearing experience, sweat & water resistant; <br><br><br>an air-holes sport structure makes the band more breathable and lighter, specially design for gym, picnic, swimming pool, climbing, hiking, camping, traveling.<br><br><br><b>compatible devices:</b> <br><br>compatible with fitbit charge 4 / charge 3 / charge 3 se<br><br><br><b>one-year warranty:</b> <br><br>every purchase is backed with 100% satisfaction guarantee. <br><br>if you receive defective products or have any problem, please feel free to message us. <br><br>we take care of you with free replacement or full refund immediately. <br><br><br><b>contact acrbiutu:</b> <br><br>1. log onto your amazon account and click on ""orders"" <br><br>2. click the title of our product and locate the page <br><br>3. select any ""size"" and click on ""sold by acrbiutu "" <br><br>4. click ""ask a question"" and select the subject of your issue <br><br>5. click ""writer message"", input your comments and send it to us.