Fabric: No liner? No problem. When you need extra warmth, our Zip In / Zip Out Liner can be worn on the inside of our Solid Team Work Jacket (JT36). Made of quilted nylon, this liner is both warm and durable. And the inside patch pocket provides extra storage for your phone or tools you need close at hand. Don t let the cold weather get you down - get the job done with our fully insulated liner.