There's more to life than steps and reps. Whether you're monitoring every step, every lap, or every night's sleep, the Sleep Sport Band is soft breathable and comfortable 24/7--the perfect place to tuck your sleep or fitness tracker. A perforated brushed spandex band with an inline pocket holds your tracker, making it easy to adjust your Sleep Sport Band with a Velcro® closure. An included extension band lets you convert the wristband to an armband on the fly. For Use With: Fitbit®, Misfitâ„¢, Sony® SmartBand; Accessory Type: Wrist/Armband; Material(s): Nylon; Color(s): Black.