It is a well known matter that everything placed on the ground is degradable (due to bacteria) - also our covers. So we have developed a new bag, which makes it easy to fill in without putting it on the ground. The covers will not be wet. The opening of the bag is very large and it is easier to roll the cover on the wing and use the bag, which now turns up from the inside . Your cover now lies just like a bowl and you can fill in the other parts of the cover. When the covers are on the plane, the bags are hidden in the covers under the wings. 

This will extend the lifetime of your covers.