The Kurgo K9 Core sweater keeps your dog warm without restricting movement, thanks to its athletic fit. Made of fleece knit, it works on its own in cool weather or as a layer when it gets colder. • Athletic fit lets your dog move freely • Zippered opening for access to a harness or collar • Zippered neck to fine-tune the fit • Belly closure that resists fur buildup A great companion for fall and winter walks.