Compatible Models- This colorful silicone band replacement perfect compatible with Fitbit Ace 2 for Kids 2019 New release activity tracker (Tracker is not included).^ Install & Adjust Simply- No tools needed, it is very easy to put it on and remove. Free size fits most wrists (4.6 - 7.1 inch), with plenty of spots for size adjustment.^ Environmental Material- Using high quality soft silicone material, which is comfortable and durable. Preventing kids' skin from being stimulated, and protecting the Fitbit Ace 2 tracker from dirt and scratches. Fit securely for swimming, running, dancing or working out.^ Various Colors- Delighted varied colors personalize childrens' wristbands to fits their moods and outfits in daily life. Personalized Fitbit Ace 2 Smart Watch with this refined replacement wristband.^ Secure Design- The connect part locks onto the Fitbit Ace 2 watch precisely and securely, the plastic clasp works well in holding the device in place. Enjoy the sports activities with them.