These 3x3x6 kraft reverse tuck mailers are crafted from durable Kraft paperboard, these mailers are sturdy yet lightweight. Their unique reverse tuck design ensures a secure closure, eliminating the need for additional tape. Easy to assemble and ship flat, these mailers save valuable storage space. Whether you're mailing delicate trinkets or important documents, trust our Kraft Reverse Tuck Folding Mailers to protect your items during transit.