Work well, at what they were designed to do.
I wear prescription compression knee high socks, which are fairly expensive. I am experimenting with various similar products to see if I might get some benefit at a cost saving. These socks work well when used for aerobic and gym exercises, but I cannot wear them all day as ankles swell. Apparently, I need the compression in the foot and ankle areas also. I am 5'7" with 14 inch calves and the compression was snug , but much less than the 30-40 mmHG prescribed compression sock. Also if wearing socks under long pants, the embroidered design tends to skuff up.
Prosimproved circulation during aerobic exercises, competitive pricing, good custormer service and competitive pricing.
ConsNone that I noticed, if they're used in the manner intended.