Abstract: Protective, slip-on, two component cover system made of soft, absorbent material and adapted to protect the body and neck of a guitar or a bass guitar. It is preferred that the components are made of a natural, soft fiber such as cotton flannel. The body component has front, side and back sheets which are sewn together to correspond generally to the shape of a guitar or bass guitar. The body cover component has an open area to allow installation and removal of the cover with respect to a guitar or bass guitar body. The body cover component has a guitar or bass guitar pick or plectrum storage pocket. It is preferred that the neck cover component is made of the same natural, soft fiber cotton flannel and has a long sheet and, depending on the neck construction, a cap or wrap around belt which are sewn together to correspond generally to the shape of the guitar or bass guitar neck and its headstock.