Weekend street markets keep everyone walking through shifting temperatures, and The Sweater Rib Cardi from Donni keeps up by working open as a layer or buttoned up like a top. This rib knit cardigan stretches with every reach and step, then holds its shape instead of bagging out. Mother-of-pearl buttons add a polished finish when it's closed, and the Tencel and organic cotton blend, with a touch of spandex, stays soft through a full afternoon of wandering.