I've been running with my car key on a lanyard for the past few years. LONG time ago I had a flimsy wrist band that had a zippered pouch, and I would run with my house or car key in it. Happened to spot this while searching for something else. Anyway, a house key will fit fine in this easily, a car key will be tight and bulge quite a bit, but it works fine. Trick is to insert the large key prior to putting this on your wrist. Seems like quality material and zipper. I think this should last a while. Happy with my purchase, and happy to be running without keys hanging around my neck.
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