



Things like heavy plastic heatsealed clamshell packaged items (the ones you tear your hands up or stab yourself with utility knife trying to open) are well suited - they don't get scuffed up and keeps shipped weight down. Also in cases where item is already boxed but would be double boxed to protect finish on interior box from picking up grime, but double boxing would push it over 2lb or 3lb, while using a tyvek as outer protection would stay under 2lb or 3lb, etc. Over 16oz (FCM off the table), and item is suited to it and non-breakable (like a sweater) and saves me the 15¢ for my own poly envelope. Rarely use the tyveks, but can be of use for certain items. As others said, same as a zoned Priority Mail, by weight box. >So you're listing it as Priority Mail Thick Envelope/Package in Ebay when printing the label?
