When Champion used to make socks for Costco ("Elite") they were the best, most comfortable socks I had ever owned. They made my  feet so comfortable I'm sure I could have worn my boots to bed. But Costco switched to a sock made by somebody else, and Champion dropped the "Elite" line. The ones I just bought (just like another reviewer said) are thin. Too thin. They might be O.K. for a tennis shoe, but never for a work boot. I did get excellent customer service from Champion, and they even sent me a check for 10 bucks as a sort of refund. By the way, the Kirkland sock from Costco is terrible, but that's another story.