Tried Matuse booties this winter. This is their first year they've made them, and for my preferences, I'd say they nailed it. No strap, lightweight, internal split toe, good traction without being sticky. Says 3mil, but feels thinner like 2mil- still plenty warm for our harsh SD winter. I am an 11 in dress shoes / 11.5 or 12 in sneakers, and their 11 fits me perfect. Only initial concern when I tried them on was it might be a tiny bit roomy around ankle (without a strap), but has never been an issue: I've yet to have any heel lift or flushing. So far, holding up well after one season... still look new.
Might be the best bootie I've tried.
YMMV. I know people have had mixed experiences with Matuse, but I like the idea of supporting a local brand and I'm stocked on these.