i-smile 2PCS Replacement Slim / Thick Strap Wrist Bands for Jawbone Up Move (No tracker, Replacement Bands Only) (Black&Navy, Thick) Made with medical-grade rubber.A good replacement for your old and broken strap Flexible and comfortable to wear day and night, and with the adjustable clasp you can size it to fit any wrist The size can be adjusted according to the circumstance of individual wrist Mix and match straps and colors to make UP MOVE your own No tracker or other parts!!! Replacement Strap Band!!!! FOR JAWBONE UP MOVE STRAP ONLY!!! Not for UP24 UP2 or other models!!!