Multi-use envelopes. Poly Bubble Mailers can be used from home or business for customers, friends, or family. To ship electronics, cosmetics, , delicate items, jewelry and much more Bubble Mailers Internal Size: 3.5X5 Inch. When the length and width of your reaches 3 x 4.8 inches and the thickness of the 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 Please note: These are small padded envelopes to provide extra protection during , do not directly and may be too small to send by . Please double check that the size fits your product before purchasing.