#1 Self Sealing Bubble Mailer Envelopes Inside Size 7 1/4" X 11 1/8" - Pack of 25pc Good for standard VHS tapes , books . Inside Size approx. - 7 1/4" x 11 1/8" The Tuff Stuff Bubble Mailer! Heavy weight Kraft paper outside with strong, 3/16" bubble lining inside. Finned sides & bottom - better impact protection. Low friction lining - easy in/easy out for your product Self-sealing, peel and seal closure - just load, peel off strip and fold over to close