Here's a terrific pair of vintage Bic Mac work pants from JC Penney. Hard to date but I'd say they're from the 60s-70s. Made of 'Perma-prest' poly cotton twill fabric, with a button & metal fly zipper, these are classic workwear like MY dad wore to work for as long as I remember, lol. Flat front, side seam pockets, buttoned back pockets. These have a permanent crease and narrow cuffed hems.
 
Pre-owned, used; very slight surface pilling and some fade from frequent wash & wear.
 
No size given on the label; please read the actual garment measurements given next-
Waist- 30 1/2" measured flat with no front dip
Hip- 39" measured at the base of the pocket opening
Front rise- 11 1/2"
Inseam length- 29 1/4"
Outer length- 40"