UGG is an American footwear company and a division of Deckers Brands.UGG is a registered trademark in the United States and over 130 other countries for footwear as well as bags clothing outerwear home goods and other products.Deckers is headquartered in Goleta California with an e commerce division located in Flagstaff Arizona.UGG is an American footwear company and a division of Deckers Brands.UGG is a registered trademark in the United States and over 130 other countries for footwear as well as bags clothing outerwear home goods and other products.Deckers is headquartered in Goleta California with an e commerce division located in Flagstaff Arizona.