TRU-SPEC Gen-III ECWCS Level-2 Top - Men's Tan 499 Medium Regular 2095004. S. Army Natick Soldier Research Development Engineering Center (NSRDEC) and currently used by select Army and Air Force units. The base of this system consists of a parka and trousers or trousers and a variety of other clothing items which are used in various combinations to meet the cold weather environmental requirements of the US military. The Level-2 garments provide light insulation in mild cold and provide an additional layer of protection in frigid conditions. The grid fleece pattern on the inside is designed for maximum breath-ability and improved moisture wicking properties. The construction of this garment was originally developed for and is still used in a variety of clothing throughout the world. The ECWCS garments are designed to be used in combination with the other items in this system to meet the cold weather environmental requirements of the US military. The Level-2 garments are based off these designs and are currently used in a variety of configurations by the US military. The base of this system is a grid fleece which provides increased stretch and greater breathability. The tags are made from a low pill jersey knit which provides a smoother appearance and greater comfort by allowing the fabric to drape better. In addition there are thumb holes in sleeves to allow the wearers to layer this garment as well. Specifications for TRU-SPEC Gen-III ECWCS Level-2 Top - Mens: Manufacturer: TRU-SPEC Sleeve Length: Long Sleeve Apparel Fit: Regular Gender: Male Color: Tan 499 Application: Military Fabric/Material: Performance Plus Polyester/Spandex Grid Jersey Weight: 6.6 oz Features of TRU-SPEC Gen-III ECWCS Level-2 Top - Mens Zip through collar zips to create turtleneck Tagless heat transfer sizing label Thumb holes in sleeves for adding multiple layers Flat locked construction Microban anti-microbial properties in the fabric to aid in odor defense Double needle stitched hem Package Contents: TRU-SPEC Gen-III ECWCS Level-2 Top - Mens TRU-SPEC 2095004: Gen-III ECWCS Level-2 Top - Mens Tan 499 Medium Regular