Get all the brawn without the bulk. The RefrigiWear Econo-Tuff High Bib Insulated Overall features maximum torso and back coverage paired with a lightweight design that won t weigh you down with bulk. The easy on/off functionality with knee-length zippers and adjustable 2-inch heavy-duty suspenders add additional convenience and comfort. Comfortable, durable and functional, Econo-Tuff warms you up without weighing you down. Sizing Instructions: For the most accurate fit, take your measurements over the base layer of clothing you intend to wear with this RefrigiWear gear (such as thermal underwear, jeans or a sweatshirt) and refer to the size chart for this product.