V33 - M Mock Neck Vest Carhartt's sandstone mock-neck vest is perfect for layering. Made of 12-ounce, 100% cotton sandstone duck, it features a sherpa lining, two large, sherpa-lined front pockets, two inside pockets and map pocket with zipper closure on the left chest. A drop tail adds coverage. *12-ounce, 100% cotton sandstone duck, heavyweight *Sherpa-lined *Two inside pockets