Multi-use envelopes. Poly Bubble Mailers can be used from home or business for customers, friends, or family. To ship electronics, cosmetics, accessories, delicate items, jewelry and much more Internal size is 5 x 7 inches. When the length and width of your item reaches 4.6 x 6.8 inches and the thickness of the item exceeds 1/8 inch, please choose a larger size bubble mailer. Poly Bubble Envelopes: Tear and Puncture resistant. The interior built with bubble lined wall construction for extra protection during transit Multi-use envelopes. Poly Bubble Mailers can be used from home or business for customers, friends, or family. To ship electronics, cosmetics, accessories, delicate items, jewelry and much more Quantity: 100 Pcs