They are either slightly larger than the original or have a slightly smaller lip which should hold it in place so it slides a little easier. Not a big deal, just saying the original works better (but you can't buy it separately from Garmin). I have a Forerunner 945.
Coros PACE 2 Premium GPS Sport Watch: Heart Rate Monitor, 30h Full GPS Battery, Barometer, Strava & TrainingPeaks Compatible
20 Review
Garmin eTrex 10 Navigator
31 Review
Garmin Forerunner 35 Band Soft Silicone Replacement Watch Strap - Compatible With NotoCity Smartwatch
32 Review
Improved SEO: Garmin Forerunner 935 Black Running GPS Unit (010-01746-00)
25 Review