HAPPYCOCO Dots Polka Dots Replacement Band with Clasp for Fitbit Flex , Band only no tracker included (Large/Small) (Small) 10 Color Replacement Bands for Fitbit Flex Tracker - Tracker Not Included Easily Change the Color of Your Band for Each Day's Style! Small size (4.7-6.9"/120-175 mm) Durable High Quality Material. Durable High Quality Material.