In the past, insulated button-up shirts always seemed like a good idea but failed to deliver all day comfort and performance...until we built the Fusion Snap Shirt. We transformed the insulated shirt from an awkward, overstuffed button-up into a high-performance cool weather garment you can wear to dinner. Sporting 40 grams of Toray(R) 3DEFX+(TM) throughout, the Snap Shirt gives you just enough heat retention for cool days. Highly articulated sleeves and gusseted armpits mean you have full range of motion in your shoulders and back. Whether you're tucking a cast under an overhanging tree or pulling hard on the oars to let your buddy send one in there, you won't even notice that you're wearing the Fusion Snap Shirt. Built for the coldest days on the water with Toray's(R) 3DEFX+(TM) to keep you warm all day. Engineered insulation paneling utilizes this full-stretch synthetic down in a performance mapped 3/2 fill ratio(90g body/60g sleeve & hood) to keep your core warm and maintain heat throughout the body. Spiral-shaped fibers in 3DEFX+ aid in providing higher volume to trap warm air and provide stretch to the garment. The fishing puffy just got upgraded. The Fusion Collection stands alone in fishing apparel due its high stretch capabilities. Paired with 3DEFX+(TM) stretch insulation, face fabric utilizes Primeflex(TM) yarn for a full-stretch, insulated jacket. This unique combination offers a product that stretches at both the fabric and insulation levels. The full-stretch fabrics provide an incredibly smooth and soft jacket with high levels of stretch for enhanced mobility. Color: Dark Shadow Features/Benefits Low-riding, advanced collar prevents bunching and allows for easy layering. 2 chest pockets with quick snap fasteners/buttons for gear storage. Articulated sleeve patterning and gusseted underarms increase mobility and comfort. 2 Insulated side pockets for hand warming.