I use them all the time. Not only are they priced reasonably for an envelope, but they are light enough not to increase your postage.
Innovative Nifisa Honeycomb Alternative: Remarkable Cushioning for Ultimate Comfort
4 Review
π¨ Fuxury Blue Anti-Static Bubble Cushion Wrap Roll - 2 Rolls, 72 Feet Total: Protect and Secure with Air Bubble Technology!
3 Review
Honeycomb Cushioning: Eco-Friendly Biodegradable & Recyclable Wrapping Solution
3 Review
Fuxury Pink Anti-Static Bubble Cushion Wrap Roll Air Bubble Roll 1 Roll 36 Feet
3 Review