This Is How We Package Our Slabs For Shipping! , We use boxes and bubble mailers together to keep any slab we send in the post safe during transit., It's really important our customers receive their Amazon.com: 100 Pack Plastic Graded Trading Card Shipping Protector by Hobby Armor, 4" x 6" with Rounded Corners, Translucent Vibrant Multi Color Plastic Card Protector to Guard Cards from Dings, Cardboard Alt : Multi Slab Slab Mailers Shipping Boxes for Graded Cards 650 ct. Amazon.com: SLAB ARMOR 4 Row Graded Card Storage Box PSA Slab Case For Graded cards Hold 160+ Slabs Graded Card Case PSA Graded Card Storage Sports Baseball Card Collector Gifts TSA approved Amazon.com : Gemini Graded Comic Book Mailers Pack of 25 Ships one CGC (or similar) Graded Comic Book Slab Heavy Duty Corner and Edge Protection Self Seal Closure What size bubble mailers are best for shipping SGC and PSA cards?