From Longman Dictionary of Contemporary Englishouterwearout‧er‧wear /ˈaʊtəweə $ -tərwer/ noun [uncountable] DCCclothes such as coats that are worn over other clothes
Examples from the Corpus
outerwear• The flocking operation is critical to the making of Polartec and Polarfleece, the mills' trademark fleece used in outerwear.• For example, its outerwear sector has brought tremendous success in sports and leisurewear sales, said Coleman.• It will sell outerwear, luggage and accessories. 