The Iron-Tuff -50°F Insulated Coverall Suit is our recommended coverall for providing full body coverage and maximum protection from the harsh elements. The coverall comes with insulated oversized pockets, storm flaps over all the zippers, and a nylon outershell to guard against tears or abrasions. Locking out the wind and water, this garment is rated to -50°F to protect you in the most extreme cold environments.Complete protection, supreme durability, Iron-Tuff Coveralls give you all-over warmth in one tough garment. You can search, but you re not going to find such tough, long-lasting coveralls that will protect down to -50ºF. Work in confidence, comfort and warmth in any frigid environment.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.