This padded envelope is the best option you can find on the market. The bubble padding is protecting what’s inside. This is a lightest mailing envelope, that allows you to save on the shipping price. Size: 9”x6” I combine the shipping price as following: for one envelope – $2.25 for two (add $1.00) – $3.25 for three (add $0.50) – $3.75 for four (add $0.25) – $4.00