50’s-60’s Blue Cotton Denim Overalls by SanforizedThese circa 1950s or 1960s blue denim overalls by brand Sanforized are a vintage work wear classic! The 100% cotton denim is a dark blue shade with a hint of indigo purple, more faded in some areas than others from age and storage (see photos). They include many typical bib overall details, including: white top stitching with green accents, a snap front pocket on the bib, button buckle adjustable straps, two button openings on each side of the waist,