Vintage 1960s overall pants

The grooviest pair of 60s overall pants with an amazing pattern. So unique! Very lightweight so great for summer. Please note that they do not cover the bust! Straps have 2 settings to adjust them - they attach at the back by a button on the inside of the pants. In great vintage condition for their age! I cannot locate a tag, and they may be homemade. Last photo shows a small stain on the right chest which may come out with a soak. No stretch! Measurements below: Waist- 17” Hips- 20” Thigh- 10.5” Inseam- 26.5” Length from longest button setting to crotch- 28” Length from shortest button setting to crotch- 27”