Black Sleep Sport Band Armband for Fitbit, Misfit, and for Sony SmartBand Brushed nylon band adjusts to fit wrists up to 8.27 (21 cm) around Included extension fits arms up to 16 (40.6 cm) around Inline pocket holds Fitbit Flex, One, & Zip, Misfit Shine, Sony SmartBand or other trackers 28 mm wide X 48 mm tall X 10 mm thick. Compatible with: Jawbone UP MOVE, Fitbit Flex/Fitbit One/Fitbit Zip, Misfit Shine, Sony SmartBand"