Milwaukee FREEFLEX Men's 40x30 Gray Unlined Bib Overalls. Part of the Milwaukee FREEFLEX Collection, the Milwaukee unlined bib overalls are built for movement. Engineered to move freely on the jobsite with integrated 4-way stretch and a custom crotch gusset. Designed for year-round use, they are built with adjustable shoulder straps and durable lightweight fabrics for easy layering with less bulk. Milwaukee FREEFLEX products are developed in collaboration with feedback from users across the trades through continuous jobsite research.