Shrink-Wrap is not stretch wrap.

Stretch wrap is applied around an object, sticks to itself and is not weatherproof. Shrink-Wrap is heated with propane fired heat gun to shrink the film around the object sealing it in a dense, UV protected, weatherproof cocoon. Shrink wrap has a higher resistance to punctures than stretch wrap does which can deter damage to the item being wrapped. While both products have their uses, shrink-wrap is far superior when total protection from the elements is needed.