I have suffered years with debilitating cramps in my toes and feet for decades. If my feet get the least bit cold, the cramping starts. I ordered a pair of electric booties and a pair of these. The electric booties were uncomfortable and got too hot very quickly. Needless to say, that product was returned. However these little beauties do exactly what I thought the electric booties would do. They keep my toes toasty warm without making them sweaty and too hot. The insides are super soft and cushy. I put these on the minute I get home from work, and even wear them to bed. I've had these for over a week, and I've not had a single foot cramp! I normally experience foot cramps daily, so to be cramp-free for over a week is a godsend. I just ordered a pair of the slipper sock version too. I cannot recommend these socks highly enough!