IMENSION – 4×8 inch padded envelopes(usable size-4×7″). lined with 80gsm bubble. Black outer surface poly film with black inner lining, so it looks like light grey color not a true white. The Shipping Bags used of opaque materials convenient for protect your privacy. COST-EFFECTIVE BUBBLE MAILERS – The padded envelopes are lightweight and water-resistant. Lower the shipping cost of your business and protect your products on the rainy or snowy day. TEAR RESISTANCE ENVELOPES – The adhesive on the fold-over flap is strong enough and goes end-to-end. There’s no need reinforcement tape and it doesn’t come apart unless you tear it up. CUSHION MAILERS – The padding is sufficient to mail small and the items that needed protection. Keep your products safety and make your customer no complaint. MAIL STUFF – The envelopes are strong and you could mail small fragile items(within the usable size 4×7″). The purple dot designer bubble envelopes