S/M - Inner Circumference = 5.5"- 6.25" inches, Width = .6" inches unwrapped, 1.5" wrapped *approximately
M/L - Inner Circumference = 6.25"- 7.9" inches, Width = .6" inches unwrapped, 1.5" wrapped *approximately
Sizes Similar to traditional Fitbit Flex™ Silicon Wristband Sizing.
No one will ever know you're wearing a Fitbit! Never lose your Fitbit Flex again - Super secure!
This product is not an official product of Fitbit® Inc. Activity Tracker not included. Color may vary slightly from photo.