Amazon Basics Kraft Bubble Mailer, 6″ x 10″ (Internal Size – 5.75″ x 9″), 100-Pack About this itemPadded bubble envelope for extra shipping protection and reinforced durability; 6 x 10 inches, 50-PackDurable recycled kraft paper exterior with ample room for sticker or hand-written labeling50gsm bubble interior lining for reliable protectionSelf-sealing closure with strong, mess-free adhesiveLow-cost, effective alternative to box shipping or standard envelopesIdeal for small items or correspondence that requires extra protection during transit