Extreme protection just got an upgrade with ourWarmPlus graphene lining to give you the ultimate warmth without the bulk. Get durable yet flexible protection from extreme cold - were talking -60°F in a snap. Attach the removable hood for work in colder temps. Open the zippered under-arm vents to let in a little air when work starts heating up. Take performance to the extreme weve got your back.The entireExtreme Collection, now with head to toe protection, was designed for comfort, style, and the ultimate protection. When the cold warns you to stay at home, take it to the Extreme. 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.