Celestron Dew-Shield C14 is designed to fit on the front end of the telescope to reduce the amount of dew that builds up on the corrector plate.
It also serves as a Len Shade by preventing stray light from falling on the corrector plate, which greatly improves contrast.
It is made from a thicker material called Foamex that wont crack under temperature extremes.
The quality is a step above all others as all material is sewn together (not glued) for a long life.
Stores flat after use.