For those that play a synthetic pipe bag and love the ease of maintenance of synthetic however prefer the feel of a hide bag under your arm, then this is the answer. The Fraser Vest fits over the pipe bag, as shown in the picture to the left, and then gets hidden under the bag cover. The vest goes over the stocks, this is to avoid slipping. When you have the bag cover on your bag, nobody even knows it's there. It feels just like a hide bag under your arm when playing. It's a great idea and works like a charm. Fits all types of synthetic bags.