Shipping 

The poly bag seems to easily shine against it's competitors. Many companies use what seems to be extra thick saran wrap to wrap individual items. However, you have to use so many layers of this material to pad items safely that it ends up being wasteful. In contrast, poly bags can be made to fit a specific size cargo, and fit over the items with a snug fit. This snug fit keeps items from shifting around, which then keeps your cargo safer, and uses far less material in the process, which then saves you money. 

Storage 

Putting your furniture into storage? Placing that beloved toy into the top of the closet? Using poly bags will make sure that no dust or harm will come to your beloved items while they are sitting in storage. Since the plastic will shield your items from harm, you can rest easy knowing it's just waiting for you to return someday! 

Item Bags 

This is an area that both poly bags and paper bags shine! Both are great for putting items that you have sold to another and both are exceptionally strong. Paper bags are a bit more sought after in this area due to their tactile feeling when it is in a persons hand; but both are great for bagging up items. Also, both are recyclable, so don't feel bad when you hand these out.