I originally purchased the Spa Bootie from Acorn, but had to return them because they were so huge!  When I bought these, I ordered a size down.  They were a bit tight for a couple of days, but they broke in quickly.  They keep my always-cold feet toasty warm, especially over a pair of aloe-treated socks.  The cushioning is very thick, although it smashes down a bit more than I'd like when I stand.  All-in-all, a great pair of slippers that seem like they'll last until at least next year, but probably for quite a while longer.