About this item Pack of 400 Bubble Mailer 8.5 x 11 Inch. White mailers for small business with peel-n-seal are a reliable choice for sending fragile items. Shipping labels and stamps are easily attached to padded mailing envelopes. Premium Quality Packaging for Small Business. Bubble packaging envelopes are made with the highest-quality materials. Bubble bags for shipping are lined with 80 GSM bubble, with unique air cellular layers and 360° strong air bubble technology to help absorb shock during shipment. Secure and Private Shipping Packages. Sturdy layers of envelope mailers are blocking light and shield content from view. Strong and durable closure completely covers mailing envelopes bubble padded, and premature opening or removal of items before arrival at destination will not be unnoticed. Lightweight Bubble Envelope. Multipurpose Shipping Bags Bubble Mailers. Use universal padded poly mailers for packing books, cosmetics, phone accessories, medicines. Padded envelope with bubble inside is suitable to send crafts and fragile items.