1 piece bra holder. NO trackers inculded size: 1.18 inch X 2.25 inch X 0.8 inch (3cm X 6cm X 2 cm) It can loop through bra strap of up to 2 inch width (5 cm) Used for sports & sleep. fashion gift for her. Having wore plastic holder for a season? time to use this new fabric holder for your fitbit one clip. chose the color to match your fitbit flex wristband band replacement band, necklace clothes and style. alternation for fitbit flex wristband band replacement band. low weight: 0.3 oz (9 gram). used as carrying case and holder for your fitness fitbit tracker.