There are many reasons for using a protective cover when the parasol is not in use. It keeps out wind and rain and also protects the parasol from excessive UV radiation, which can fade the cover over time and damage the material of the pole and frame. The protective cover comes into play as soon as soiling from leaves and dust, dripping tree resin or bird droppings is imminent, and it prevents infestation with mold and mildew stains (also in winter storage in the shed or garage). In short: a protective cover extends the life of your parasol - provided that it fits like a glove. The one offered here comes from the same manufacturer in Rottenburg am Neckar as our market parasol with ash wood frame and is tailored precisely to the dimensions of this parasol model, but of course it also fits parasols of the same size from other manufacturers.