Solid Black color 5.4” circumference Compatible with vίvofit jr. The VivoFit Jr Watch Band by Garmin keeps your kid stoked on using and wearing the VivoFit Jr Watch with its fun-loving designs and sleek, comfortable fit. This silicone replacement band is fully waterproof, so you won't have to worry about your kid submerging it in the bath or neighborhood pool. It's also incredibly tough, withstanding the abuse your kid is bound to dish out.