Hawaiian Vintage Postcards Pack of 30 - Waikiki by Kerne Erickson 30 Hawaiian Vintage Postcards Printed on Heavyweight, Chlorine-Free 100% Plantation-Grown Pulp Paper. Each Postcard measures 3.9 x 5.8 inches with Die-Cut Round Corners and a Satin Matte Finish. Superb Quality by Pacifica Island Art of Maui, Hawaii