In an effort to promote sustainable practices and reduce our environmental footprint, we are phasing out the use of single-use plastic packaging and other unsustainable shipping materials. As an alternative, we are getting more and more mailing boxes and shipping cartons, which are constructed from 100% recyclable corrugated cardboard. They are not only easily recyclable and compostable, also offers a viable solution for reducing waste and promoting environmental stewardship. This premium 220 x 160 x 77mm B140 mailing box is self-sealing, you can pack and send without the use of tape. It is a box alike envelope which can simply peel and seal. This self-sealing box is made of quality corrugated cardboard with 2 sticky seals. It is double-sided on the side walls (after folding) and seamless on the bottom and top.