This product is advertised as "no elastic" but there is actually a thin elastic thread at the top. Also the top width (the "cuff" area) is just as narrow and tight as any other sock you could buy. I'm slender (5 foot 7 and 129 lbs) and my ankles are probably only a tad wider than other people with my porportions.  I can't imagine these would fit people who weigh a little more than I do. Also I was disappointed by the overall feel. They're not as comfortable as smart.wool "walking" and "casual" socks.  Maybe the lesser comfort is because J.B. Field casual socks have a thicker gauge wool yarn than smart.wool walking/casual socks.  That said, it seems that, in the last couple years, the smart.wool has decreased the top "cuff" width of walking/casual socks so that it's more narrow than before (I haven't gained weight).  These J.B. Fields' socks and smart.wool walking socks are about the same tightness at top.  The Fields' socks seem overpriced in view of their tight tops and overall comfort level.