7.7 x 0.5 x 5.1 inches

UNIVERSAL SAMSUNG SIZE : The Premium armband is designed to fit all Samsung phones comfortably with the added bonus of keeping your phone Case ON (Including Otterbox / Lifeproof).
360° ROTATION : Unlock your home screen without the inconvenience of removing your phone. The extra rotation keeps all your phone functions just a turn away.
ONE SIZE FITS ALL ARMS : The secure armband has an adjustable arm strap that is designed to hold secure during even the most intense workout. The armband now comes with a bonus extender strap to fit all arms circumference: X-SMALL 8″ – X-LARGE 21″