Poly Bubble Mailer 4'X8' #000- Pack of 50 envelopes for mailing and pre-packed shipments The padded white envelope has 4'X8' outside dimensions with sealed edges; possible.5' +/- variance on the sizing The 3/16' cushioned inside interior dimenions are 4'X7' with a self seal closure Opaque color with tamper resistant closure keeps items concealed and secure during transit Lightweight envelopes are a great choice for smaller items to reduce shipping shipping costs