Fitbit Alta Bands Replacement Accessory Wristband Designed for Fitbit Alta, and perfect replace your original band Made of high quality rubber. Comfortable, durable and waterproof Size: Small 5.5"-6.7" 140 mm -170 mm; Large 6.7"-8.1" 170 mm -206 mm Delighted varied color Personalize your wristband to fits your mood and outfits in daily life with this band new color choices 100% SATISFACTION, MONEY-BACK GUARANTEE