The Marmot Men's Reactor Jacket is a classic 100-weight fleece that looks as good as it feels, the Reactor Jacket sports a wind flap at the front of the jacket to block chilly drafts. Angel-Wing Movement means absolute freedom of movement, whether worn as a jacket or underneath a shell as a warm mid layer. Features and Specificaions Polartec Classic 100 Micro Flat lock construction Zippered handwarmer pockets Bonded zippered chest pocket Wind flap behind front zipper with chin guard Elastic draw cord hem for adjustability in serious weather Center Back Length: 70.5cm Fit: Regular Fit Weight: 266.5 g Main MaterialsPolartec®Classic 100 100% Polyester Micro Fleece 4.6 oz/yd Technology Polartec ClassicPolartec Classic fabrics set the bar for lightweight warmth and breath-ability. On the market and used by outdoor professionals for nearly three decades, this original fleece offers unparalleled quality and durability.The 100% polyester velour construction creates air pockets that trap air and retain body heat. Unlike less expensive fleece fabrics, Polartec® Classic products maintain their insulating ability and non-pilling appearance after repeated laundering.These fabrics are available in a range of weights to provide the right level of insulation for most outdoor activities. Polartec Classic 100 weight fabrics are the lightest and are excellent for a warm first layer or lightweight sweater. Polartec Classic 300 fabrics are the heaviest and provide a warm thermal layer for very cold outdoor activities. Halfway in between are Polartec Classic 200 weight fabrics, providing outstanding warmth and versatility.Polartec Classic line includes over 90 styles of fabrics available in hundreds of colors, patterns, and prints. Many styles are also available with a water repellent surface that sheds rain and snow. The Polartec Classic line provides not only outstanding warmth without weight, but are breathable and durable, dry quickly, and are great styling options for virtually every end use.Technical Highlights: Provides warmth without the weight and bulk of traditional insulating fabrics Highly breathable to provide comfort in all activities; does not restrict the movement of moisture vapor For water repellent styles, surface sheds rain and snow Dries quickly to minimize heat loss Durable. Will outlast other fleece fabrics Machine washable Versatile; appropriate for a broad range of activities Light, mid and heavy weight constructions provide choice of insulation level Marmot Reactor Jacket - Winner, Outdoor Gear Lab Best Buy Award"With the price of technical fleece jackets soaring (some models in this review cost $200 USD!), some people might be left out in the cold, so to speak, if they can't or won't shell out that much money. This is why we always include some lower priced models in our testing to see how they compare to the heavy hitters. Hopefully we find something that performs almost as well for a fraction of the price. In the case of our fleece jacket review, the Marmot Reactor decidedly earned our Best Buy award. This lightweight jacket surprised our testers with how warm and comfortable it was. The thin fleece material also allowed the jacket to breathe well and dry quickly when wet. It's doesn't have a hood or many bells and whistles, like our Editors' Choice winner, the Patagonia R3 Hoody, but for half the price it's a great deal for a high-performing fleece." Outdoor Gear Lab, 2015 Marmot Sizing Chart and Fit Guide - MEN   XS S M L XL XXL XXXL Chest 33-35 36-38 39-41 42-44 45-47 48-50 51-53 Neck 13.5-14 14.5-15 15.5-16 16.5-17 17.5-18 18.5-19 19.5-20 Sleeve 30-31 32-33 34-35 35-36 36-37 37-38 37-38 Waist 25-27 28-30 31-33 34-36 37-39 40-43 44-46 Hip 34-36 37-39 40-42 43-45 46-48 49-51 52-54 Inseam* 28 29.5 31 32.5 33 33.5 34.5 *Pants with multiple inseams (Outerwear) Men's Inseam: SHORT:30      REG:32   LONG:34 Note: to work out your sleeve length, the measurement should be taken from center back of the neck, down to the elbow and then to the wrist. Marmot Mens Reactor Jacket - Polartec Classic 100 Wt Fleece