A pair of vintage cardboard product boxes for Bulldog brand Jar Rubbers, manufactured by the Boston Woven Hose & Rubber Co. of Cambridge, Massachusetts. Each box features a light blue ground with a central graphic of a bulldog head inside a red circular border. The top of the front panel is printed with the words ONE DOZEN above the brand name BULL DOG in large red serif block letters with black outlines. Below the central illustration, the text JAR RUBBERS appears in yellow serif letters. A side panel includes the text SUITABLE FOR ALL KINDS OF CANNING, FIT ALL POPULAR JARS. MADE ONLY BY BOSTON WOVEN HOSE & RUBBER CO. CAMBRIDGE, MASS. An additional panel bears the Good Housekeeping Institute seal of approval within an oval border featuring a red star. The boxes are constructed from printed cardboard.