GOOQ Smart Magnetic Clasp Strap Compatible with Fitbit Flex Bracelet Sports Monitor and Sleep Monitor Wristband (Black & Darkblue & Cyan) Special designed for fitbit flex sports tracker. Quality silicone material and lightweight, Easy to install and carry around. Multi color options, give you comfortable wearing experirnce. The magnetic clip can adsorb closely your Fitbit Flex Sports Activity Tracker Monitor. prevent your fitbit flex tracker monitor from missing. Clasp clip only, the flex bracelet monitor in the pictures is not included.