Check the listing for details. ProLine Bubble Mailers 4x8" Green Ash Bubble Mailer, Self Seal Padded Envelop.... Condition: New. Listed at 16.92 USD. Manufacturer: ‎ProLine. Strong Self Sealing Adhesive Our padded envelopes is using four-season adhesive, which can maintain strong stickiness throughout the year, even if the weather is very hot or cold.