Mail gifts, store items, or use Lot45 White Corrugated Mailers to ship your shop merchandise. These white, blank boxes for packaging small business items are perfect blank canvases for your needs. Decorate them, adhere labels, or put your logo on corrugated shipping box. Pre-folded edges make folding white corrugated mailer boxes bulk set of 20 a breeze. Made of single-wall corrugated cardboard, these plain white mailing boxes will stand up through shipping and can hold 20-80 pounds. Each cardboard box only weighs 0.3 pounds so you can make the most of the fillable 9 x 6 x 4-inch box without worrying about increasing shipping rates. Ship candles, mugs, clothes, books, and more or store away those things. With a set of 20, you can find multiple ways to use mailer boxes. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.