Item 2. PROPERTIES

Our world headquarters is located in Marlborough, Massachusetts, with principal regional headquarters located in Singapore and Voisins-le-Bretonneux, France. As of December 31, 2020, our principal manufacturing and technology centers were located in Minnesota, California and Indiana within the U.S., as well as internationally in Ireland, Costa Rica, Puerto Rico, Malaysia, Brazil and Switzerland. Our products are distributed worldwide from primary customer fulfillment centers in Massachusetts, the Netherlands, and Japan. As of December 31, 2020, we maintained 16 principal manufacturing facilities, including seven in the U.S., three in Ireland, two in Costa Rica, one in Puerto Rico, one in Malaysia, one in Brazil and one in Switzerland, as well as various distribution and technology centers around the world. Many of these facilities produce and manufacture products for more than one of our divisions, and also perform research activities. The following is a summary of our facilities as of December 31, 2020 (in approximate square feet):

(1) Includes our principal manufacturing facilities in Minnesota, Ireland, Puerto Rico and one facility in Costa Rica, our manufacturing facility in Malaysia, our primary customer fulfillment centers in Massachusetts, the Netherlands and Japan, and our global headquarters location in Marlborough, Massachusetts.

(2) Includes our principal manufacturing facilities in California, Indiana, Brazil, Switzerland and one in Costa Rica, and our regional headquarters located in Singapore and Voisins-le-Bretonneux, France.

(3) International facilities includes Puerto Rico.