I just returned a set of YakTrax Skitrax. I would avoid buying online. You need to see how thick and bulky they are before making the decision to buy. To me they were too bulky to store in your jacket. Leaving them at the lodge with your bag is certainly an option, but not if you spend a good part of your day at a second or even third mini lodge on the mountain. Ideal for booting up at your car... yes. I would have kept them but the online sizing chart said my US size 11 boot would surprisingly need a medium??? The rubber is heavy and there was no way they were going to stretch to fit on the soles of my 334mm boot. I had read soaking in very hot water would allow you to stretch them. But doing that made me worry the narrow heel to toe connector strap might be weakened? For some they may be a perfect fit. I can certainly see their usefulness. But I would advise buying them in person, maybe even with a boot in hand to try the fit. In the meantime I am considering a simple velcro strap wrap over the boot to give some in lodge slip protection. Or who knows maybe a pair of the reusable real estate 'booties' with soles.