5.11 Tactical products have been built with the direct involvement of emergency services professionals from the very beginning of our company. When we decided to introduce a full line of products for Fire and EMS professionals it was only natural to begin product development with field personnel and the first thing they wanted was a ? Zip Job Shirt. Our ? Zip Job Shirt is made of 11.6 ounce poly-cotton fleece fabric with our own stain resistant treatment. This ? Zip Job Shirt resists stains from soils, food and liquids and will stay looking neat clean and professional for an extended shift. The no-roll collar stays put and the locker loop lets you hand the shirt from any hook.