I must give these a 5 because I have absolutely no complaints about them. Yes, some might consider then to be a bit pricey for a pair of socks; however, they are worth it for the extreme comfort and the purpose for which I bought them.  I wear these to sleep in during the winter months. I do not wear them in shoes or sneakers for daytime use. I love them and highly recommend them to others who might get cold feet under the covers or just prefer giving their feet that extra warmth at night and cozy feeling.  I don't even put my slippers on in the middle of the night if I need to use the bathroom because of these wonderful socks! I walk on hardwood floors (partially) and have not found them to be slippery either.  I've purchased two so far and will likely purchase more over time. Your feet will thank you!  :-)