disappointed.
I give it 5 stars for warmth - I have Raynaud's and I am constantly searching for better ways to heat my toes. Heated socks were good, but they had hot spots (that hurt) and had no durability. Last year I tried heated insoles, which work great in my extra thick slippers but the heat was focused on the instep, leaving my toes to still get cold unless I used the hottest setting.  So far these heated slippers are better as they seem to heat my whole foot - my toes are pretty happy again.<br /><br />I give it 4 stars for wear-ability. The fit is good (ordered the small and I have small feet, men 8.5), but when walking around I feel a slight tendency for my foot to roll off the side of the sole.  This feels a little dangerous.<br /><br />I give it 4 stars for operation. Three things I'd like changed: 1) the buttons are way too bright during operation. When sitting in my lounger watching TV, the lights on my feet are a distraction.  2) Once turned on, it is way too easy to accidentally change the power level when your foot brushes up against anything.  I think the button should be harder to press, or that you should have to hold the button down longer for it to change levels (by the way, they say to hold it for 3 seconds to turn on or off, but it's really about 1 second).  3) The color code of the power levels is weird.  I have other heated devices that have 3 levels and ALL of them go Red to Green to Blue (red is highest, blue is lowest), but these slippers have Blue as medium and Green as low - that's just weird.<br /><br />I give it 4 stars for affordability.  $80 seems a bit high.<br /><br />Something strange, but charging these batteries the very first time broke my usb adapter (rated for 2 outlets at 2.1a each).  I didn't notice when it broke, but when I checked on the batteries a few hours later, the adapter was dead.  It's hard not to blame these batteries, considering all of the use this adapter has had in the last few years.<br /><br />I just ordered 2 pairs of extra batteries (which are not a bad price at $27) so that I can have heat all day/evening.<br /><br />Update (Jan 17) - the accidental button pressing is getting very annoying.  I suppose if you sit perfectly still (never cross your feet, or place them sideways on the floor or against objects) then this isn't a problem, but if you move your feet around at all, you are going to be changing the heat level constantly.  Now I'm looking at my feet about every 10 minutes just to make sure I've not bumped the button again.<br /><br />Update (Jan 20) - Durability - sucks.  I've only had these for 5 days and already they are barely working. The first 2 days these heated my whole foot.  Now, even on the highest setting, I can only feel a little heat in the very tip of the slipper.  My feet are cold again.  Very disappointed.
Rating: 2 stars