Generally very large bags, the most common styles are:

Centrefold or "Cap" bags

Gussetted or "sleeve" bags

The bags can be printed (safety warning notices are common even if the bag is referred to as plain), perforated and palletised in various ways to maximise your storage conditions.
Large bags such as these are often supplied on rolls for tear off. This method makes handling easier for the user - 1 bag can be pulled off of the roll when required. If the bags are made as singles it becomes less easy to remove a bag, the bundles have to be unfolded to allow release of each bag.

The film specification will be made to suit your usage requirements. Important areas for furniture bags include film strength, material clarity, slip level and tape grip.