Normally large bags made as a centrefold (flat) bag or a gussetted bag.Some covers are not bags at all, but sheets which are put over palletised or large loads.

Pallet covers fall into two groups - shrink hoods and non-shrink covers.
Shrink covers are put over the load to be covered and shrunk down either by hand with a heat gun or for larger users they are passed through a shrink tunnel or oven. This type of cover will usually perform two functions - load stability and weather protection. If a shrink cover has been applied to a load then no stretch film will usually be used to collate the palletised product.
Non shrink covers (sometimes called dust covers) are often much thinner than a shrink hood and provide weather or dirt protection only.Stretchfilm is usually wrapped around the load to provide stability after the cover has been applied.

Covers can be printed, peforated and supplied on rolls for tear off or boxed/polypacked.