These were a bit pricey, but I really needed something to keep my feet warm as I have been suffering from bad chillblains this winter and the "standard" thermal-type socks just weren't helping during especially chilly days.

These socks are extremely thick - much more than I expected.  I wear a thin pair of socks underneath them, and find that the two layers trap heat extremely well and keep my feet even warmer than if I just wore the thick socks alone.

I did find them a little large, but they fit well enough to actually stay on my feet.  The grip underneath is very good and I feel quite safe walking on tiled floors.  The color is very bright, and so far I've had no problems with washing them.  I haven't read the manufacturers instructions, but just put these socks in with my other socks, and they cleaned just fine.

I am intending to buy another pair of these sometime soon, as it would be nice to have a spare pair for when I am washing these.  The only "downside" to them is that the socks are so thick that my shoes won't fit when I'm wearing them.