Bubble out bags are incredibly lightweight, so you can save enough postage and keep your items safe at the same time. These are self-sealing bags that are water-resistant and tear-proof. Bubble out bags has a size tolerance and thickness of +/- 3%. These bags are made with3/16" small bubble, so you can use them to protect delicate items like mirrors, picture frames, artwork and glass wear. Bubble packages offer excellent cushioning, reduced packaging costs, extended protection and reduced risk of damage to objects.