Fitbit Flex 2 Bangle. Explore your style while still tracking your fitness. Beautifully adorns your wrist while tracking steps, distance, and more Hand-polished mirror finish adds an elegant shine to any outfit Size Small fits wrists 5.5-6.5 inches in circumference (14-16.5cm) Size Large fits wrists 6.7-8.1 inches in circumference (17-20.5cm) Made of premium stainless steel