4 Packages never opened of vintage nylons circa 1960's.  They are all in a medium size.  The 3 that are vintage Sears also indicate sz 10-101/2-11.  The pair from National Hosiery is a mist color.  The 3 from Sears are all beige and also indicate they are ultra sheer, all agilon stretch nylon, sandal heel with invisible reinforcement and run resistant afterwelt.