The Ergodyne® CORE Performance Work Wear Mid Layer/Thermal Fleece Vest provides warm fleece comfort with an outstanding range of motion. Midweight fleece offers soft warmth, along with moisture control, venting and other technologies to keep you comfortable all day in any climate. Also features 50+ UPF protection, stretch fabrics, odor control and comfortable flat seams for freedom of motion. Engineered for road and building construction, iron & steel work, oil/gas refining, drilling, mining, freight/baggage, warehouse and landscaping applications. Sizes: M3XL.