
I bought a Fitbit specifically for a cardio tracker but it broke because of the silicone strap. (I know silicone is inert, but sweating irritated my skin). I wanted a metal or leather strap and found these. It contained both a metal link belt and a metal mesh belt. The Revain list does not specify how they close down. The tie strap was a regular clasp (press and fold) and the mesh strap has a magnetic clasp (just a strong magnet that snaps itself into place). connector tab and push out the pins. There is no need to attach a strap to the Fitbit as it also includes additional quick release pins (similar to standard pins). Both breathe very well and are a great relief to my skin while keeping the Fitbit taut for heart rate. Monitor for work! My wrist is ok. 7" and they can go larger/smaller in either direction and should fit most adults!

Canon Nikon Sony Panasonic FujiFilm Olympus Pentax DSLR Camera Bag, Evecase Large Vintage Canvas Messenger SLR Shoulder Strap Case - Gray
45 Review

Classic Camera Bag, Evecase Large Canvas Messenger SLR/DSLR Shoulder Case With Leather Trim, Tablet Compartment And Removable Insert For Mirrorless, Micro 4/3, Compact System, High Zoom Digital Camera
41 Review

Canvas Camera Case Bag With Shoulder Strap For DSLR/SLR Cameras - Black, Medium Size By Evecase
30 Review

Soft Silicone AirPods Case Cover With Visible LED - Compatible With AirPod 2/1 Cases, Keychain Accessory Included - Ideal For Men, Women, Girls, And Boys - Light Pink
37 Review