This padded envelope is the best option you can find on the market. The bubble padding is protecting what’s inside. This is the lightest mailing option that allows you to save on the shipping price. Size: 9”x 6” 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