Filson Lined Mackinaw Wool Jac-shirt Limited Edition Brown/Tan Multi Size M. This Jac-shirt is beautiful. It is basically brand new and only worn a couple of times. Pristine condition. FEATURES -Built with 100% virgin Mackinaw Wool -Lined with Alaskan Guide flannel in the torso -Lined with polyester twill in the sleeves -Front closure and adjustable cuffs secure with snaps -Angled-entry flannel-lined hand pockets -Snap-flap chest pockets; left side with additional slotted utility pocket Material 24-oz./LY 100% virgin Mackinaw Wool + 8-oz. 100% cotton flannel + polyester twill Care Dry clean The snaps on the front closure, chest-pocket flaps and adjustable cuffs are absolutely reliable and easy to operate even with gloves on. The left-chest pocket features a slotted utility pocket, perfect for stowing pens or small tools. The sleeves are lined in polyester twill for ease of layering. Medium: Chest 39.5-43.5 - Sleeve 34-35 As much a jacket as it is a heavy shirt, this updated Mackinaw Wool Jac-Shirt is warm, weather-resistant, and highly breathable. The Filson updated Lined Mackinaw Wool Jac-Shirt–the simplicity of a shirt with the weather-resistant warmth and breathability that only Mackinaw wool can provide. It’s lined with Filson signature Alaskan Guide Flannel. The flannel-lined, angled-entry hand pockets warm your hands so you can maintain the dexterity to handle binoculars, shells, or tools.