These 4 x 4 Self Seal Bubble Out Bags protect fragile items without tape. These 4" x 4" Self-Seal Bubble Bags with 3/16" bubbles are discount bubble bags and protect the contents during storage and mailing. These self seal bubble wrap bags are used for shipping/storing computer parts, ornaments, trinkets and many other applications that protect your items from damage in shipping, 1000 per case.