High Quality Content by WIKIPEDIA articles! Mountain Equipment Co-op (MEC) is a Canadian consumers` cooperative, which sells outdoor recreation gear and clothing to its members exclusively. MEC is notable for its commitment to environmental protection and other causes. As a co-op, MEC sells only to customers who hold a lifetime membership, which is technically a share and can be purchased by anyone for $5. MEC bills itself as Canada`s largest supplier of outdoor equipment. Since its founding in Vancouver, British Columbia in 1971, MEC has expanded across Canada and now operates stores in fourteen cities. MEC has over 3.3 million members in Canada and internationally.