WoCase ZipBand Fitbit Zip Accessory Wristband Bracelet Collection (2016 Lastest Version, Secured, Lost Proof) for Fitbit Zip Activity and Sleep Tracker (Turn Your Fitbit Zip into Wearable FLEX/FORCE/CHARGE, Gift Ready Retail Package) First wristband (patent pending) for Fitbit Zip activity tracker that turns your Zip into wearable Fitbit FLEX/FORCE/CHARGE. Turn you Fitbit Zip into a watch. Personalize your wristband to match your daily style with these brand new color choices. Perfect fit for your Fitbit One activity tracker and comfortable wearing experience.30 day money-back guarantee. Please note that the step count sensitivity of the tracker might be altered when worn on wrist depending on tightness. However, the trend of your daily activity will NOT be affected.