A liquid sample packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket that, in combination with proper alignment of a liquid containing packette enclosed inside, will prevent leakage in the event the enclosed liquid containing packette fails during mail processing. The device may include coupons printed on the envelope blank and separable by perforations, and may be printed on both sides.

A liquid sample packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket that, in combination with proper alignment of a liquid containing packette enclosed inside, will prevent leakage in the event the enclosed liquid containing packette fails during mail processing. The device may include coupons printed on the envelope blank and separable by perforations, and may be printed on both sides.

A reusable mailer bag includes front, rear, first side, second side, and bottom panels which include interior surfaces that define a carrying volume that has an opening which is opposite the bottom panel. The mailer bag also includes a flap and a first side extension. The flap is configured to extend across the opening to close the carrying volume during shipping. The flap includes a first end portion that is attached to the rear panel and a second end portion that is configured to secure to the front panel. The first side extension extends from a first edge of the second end portion of the flap that is adjacent the first side panel. The first side extension is configured to extend around the first side panel and to secure to the rear panel when the second end portion is secured to the front panel.

A reusable mailer bag includes front, rear, first side, second side, and bottom panels which include interior surfaces that define a carrying volume that has an opening which is opposite the bottom panel. The mailer bag also includes a flap and a first side extension. The flap is configured to extend across the opening to close the carrying volume during shipping. The flap includes a first end portion that is attached to the rear panel and a second end portion that is configured to secure to the front panel. The first side extension extends from a first edge of the second end portion of the flap that is adjacent the first side panel. The first side extension is configured to extend around the first side panel and to secure to the rear panel when the second end portion is secured to the front panel.

A reusable mailer bag includes front, rear, first side, second side, and bottom panels which include interior surfaces that define a carrying volume that has an opening which is opposite the bottom panel. The mailer bag also includes a flap and a first side extension. The flap is configured to extend across the opening to close the carrying volume during shipping. The flap includes a first end portion that is attached to the rear panel and a second end portion that is configured to secure to the front panel. The first side extension extends from a first edge of the second end portion of the flap that is adjacent the first side panel. The first side extension is configured to extend around the first side panel and to secure to the rear panel when the second end portion is secured to the front panel.

A reusable mailer bag includes front, rear, first side, second side, and bottom panels which include interior surfaces that define a carrying volume that has an opening which is opposite the bottom panel. The mailer bag also includes a flap and a first side extension. The flap is configured to extend across the opening to close the carrying volume during shipping. The flap includes a first end portion that is attached to the rear panel and a second end portion that is configured to secure to the front panel. The first side extension extends from a first edge of the second end portion of the flap that is adjacent the first side panel. The first side extension is configured to extend around the first side panel and to secure to the rear panel when the second end portion is secured to the front panel.

A liquid sample bulk mailing packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket that, in combination with proper alignment of a liquid containing packette enclosed inside, will prevent leakage in the event the enclosed liquid containing packette fails during mail processing. The device may include coupons printed on the envelope blank and seperable by perforations, and may be printed on both sides.

A liquid sample bulk mailing packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket that, in combination with proper alignment of a liquid containing packette enclosed inside, will prevent leakage in the event the enclosed liquid containing packette fails during mail processing. The device may include coupons printed on the envelope blank and seperable by perforations, and may be printed on both sides.

A liquid sample bulk mailing packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket such that a moisture resistant coating on .Iadd.at least .Iaddend.one of the paperboard surfaces will prevent leakage in the event an enclosed liquid containing packette fails during mail processing, while .Iadd.if uncoated .Iaddend.the other paperboard surface will absorb the moisture from the packette. The device meets the US Postal Service requirements for machinable and automation letters.

A liquid sample bulk mailing packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket such that a moisture resistant coating on .Iadd.at least .Iaddend.one of the paperboard surfaces will prevent leakage in the event an enclosed liquid containing packette fails during mail processing, while .Iadd.if uncoated .Iaddend.the other paperboard surface will absorb the moisture from the packette. The device meets the US Postal Service requirements for machinable and automation letters.