This all-in-one jacket system offers a waterproof shell and an insulating fleece mid layer that can be zipped in on cold days or left at home when it's warmer. Together, they deliver a great mix of warmth, weather protection, and versatility. The outer shell is crafted from our signature Omni-Tech polyester, forming a rain jacket that keeps its promise of waterproof protection that breathes. The heavyweight 250g filament fleece inner jacket is made from 80% recycled polyester, and is warm and cozy when worn on its own. Designed as a three point zip-in interchange system, you'll appreciate the adjustable hood, zippered side pockets, an interior security pocket, adjustable cuffs at the sleeves, and a drawcord adjustable hem that seals the cold mix out, and keeps the dry warmth in. This men's jacket system is available in multiple colors and sizes. Regular Fit. To ensure the right fit, please utilize our sizing chart and the following measurement instructions: For the sleeves, start at the center back of your neck and measure across the shoulder and down to the sleeve. If you come up with a partial number, round up to the next even number. For the chest, measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.