Vintage Herringbone Twill Green Cargo Pants w Dual button Fly

This is a funky pair of green herringbone twill cargo pants - sourced up in Canada and potentially being canadian or British military. They have a zip fly that is a lightening zipper and funky waistband dual button closure that allows you to cinch the waist somewhat. They have two back flap pockets and slightly tapered legs. Overall age is hard to determine but the zipper on the fly is from the 60s. Has no size tags - see measurements in photos for best fit. Approx a medium to large. Unisex.