#6 12.5"x19" POLY BUBBLE MAILER SELF SEALING PADDED ENVELOPES for CD 12.5x19, 50 PCS Ultra lightweight, saves on postage. Push-proof and moisture-proof. Strong polythene laminated to 3/16" air bubble. Shipping labels adhere securely to the cover. Seamless bottom for maximum strength. Smooth side seams.