Bandcase Replacement Bands with Clasps for Fitbit Flex, 5 pcs (Assorted Colors) Personalized design for Fibbit Alta, good replace of your original Fitbit Alta Band Size: Small 5.4"-6.9"(140mm-170mm) Large 6.3"-8.8"(161mm-210 mm) Silicone Fasteners - Prevent the clasp loose and fall off, Keep your Fitbit Alta Band safe. Tracker or Wristband is NOT included Package: Fitbit Alta Band, Metal Clasp and Silicone Fasterner. Different combination of bands match with different accessories. Please see the details of the images