Weather changes in a flash – get protection that rolls with the punches. Our 3-in-1 Jackets let you customize your protection. The outer jacket is lightweight and 100% waterproof, with a roll-in hood you can zip into the collar when not in use. The inner jacket gives you warmth in a puffer style. Wear just the outer when it is wet, just the inner when it is cold and combine the two for those unbearable frigid, rainy conditions. 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.