SailFar Genuine Leather Bands for Fitbit Alta, Replacement Strap Wristband for Fitbit Alta Bands, Small Large(2PCS, Black + Brown, Leather) High Quality:durable and elegant material makes you feel comfortable when you do exercise,walking,playing or sleeping Easy install:Pefectly fit for Fitbit Alta,easy install without any tools Fashionable classic colorful bands make you different from others The size can be adjusted according to the circumstance of individual wrist. One year warranty and lifetime tech support