Walls Men's Zero Zone Insulated Bib Overall 100% Cotton Adjustable bib straps with comfort elastic inserts and reinforced suspender button tabs Elastic inserts at back waist for ease of movement Scuff guards at back leg hems for added durability and snaps for leg length adjustment Double knee patches with an additional waterproof barrier for more protection and strength Ankle-to-thigh leg zippers and durable metal front zipper, each with protective storm flap covering