DDup Replacement Wristbands Set for Fitbit Flex Tracker Only:
1. Free size fit your wrist depend on button site you place;
2. Durable,fashionable replacement rubber bands for the origin bands;
3. Have two sizes: S Size: 5.5~6.9 inches/140~176mm; L Size: 6.3~8.2 inches/161~209mm;
100% satisfaction guarantee:
If you are not satisfied with our bands, we provide 30 days no question-aksed return and refund.