M-bags are direct sacks of printed matter sent to one addressee and priced based on the weight of the bag and contents. M-bags travel by air transportation. Additional information regarding M-bags can be found in IMM 260.

The International Rate Tables and Rate Groups begin on page 62, and (destination) country listings defining the redesigned rate groups begin on page 72. Additional infor­mation regarding the international changes, including fact sheets, and frequently asked questions, are available in this Postal Bulletin. Also, information is available online at www.usps.com/ratecase, click Read about International Mail Changes.