Runs a bit large so I ordered . Not too many options out there to mount to non raised rails. No matter I would buy another one anyway it?s that good. Seems more accurate. Fits perfectly on the buds case but it also comes off easy which is both a good and bad thing. Satisfacción garantizada al 100%. Because they have fluffy lining it makes them nice and warm to wear . Since I only wear them at home, I really dont mind the extra room! They are very warm, The hard sole is nice too in case I need to run outside real quick, typically I keep these in the house. Thanks to those reviewers I have not had to send them back because of size.