Compatible Models- This colorful silicone band replacement is perfect for use with a certain brand activity tracker for kids (Tracker is not included).^ Install Adjust Simply- No tools needed; it is very easy to put on and remove. Free size fits most wrists (4.6 - 7.1 inch), with plenty of spots for size adjustment.^ Environmental Material- Made from high-quality soft silicone material, which is comfortable and durable. Prevents irritation to kids' skin and protects the activity tracker from dirt and scratches. Fits securely for swimming, running, dancing or working out.^ Various Colors- Fun and varied colors personalize children's wristbands to match their moods and outfits in daily life. Personalize your certain brand Smart Watch with this stylish replacement wristband.^ Secure Design- The connecting part locks onto the certain brand watch precisely and securely, and the plastic clasp effectively holds the device in place. Enjoy sports activities with them.