For Fitbit Alta HR and Alta Bands, TreasureMax Replacement Band for Fitbit Alta/ Fitbit Alta HR Wristband/ Fitbit Alta HR Accessory/ Fitbit Alta HR Band Pack 3 Fit for Fitbit Alta ONLY- Specially designed to fit for Fitbit Alta ONLY. Tracker NOT included. TreasureMax bands for fitbit alta is made from TPU material. It is comfortable, eco-friendly and safe for the human skin. Free Adjustable length: Large Size 6.7-8.1 Inches wrist, Small Size 5.5-6.7 Inchs wrist Silicon Fastener Ring and Customize Metal Clasps for free - designed specially for fitbit Alta to protect the clasp loose and band fall off Delighted varied color Personalize your wristband to fits your mood and outfits in daily life with this brand new color choices