I really like the feel and style of the Acorn slippers, but unfortunately, every pair I get lasts less than a year, barely more than 1/2 a year.  I wouldn't mind so much if I only paid about $15-$20 for these, but Acorn slippers are notoriously pricey.  I've had a few pairs, and buy them because they have such great styles, but I think I'm going to start looking for alternatives, and hopefully they'll last longer.