I was concerned about some of the review, but I took the risk and made the purchase anyway. The socks are indeed thick and comfy if you just wear them inside the house without shoes. But once you put your shoes on, the back of the socks do end up outside your shoes, not comfortable, and they slip. So I think I'll just wear them inside the house to keep my feet warm. Updated review 12/27/2019. Seller Frankie contacted to make sure 100% customer satisfactory and refunded me full purchase amount. Seller was easy to communicate and has done a great customer service. For that reason I changed the review to 5 star.