COST-EFFECTIVE - The padded envelopes are lightweight and waterproof. Lower the shipping cost of your business and protect your products on the rainy or snowy day. SELF SEALED ENVELOPES - The self-seal closure provides a reliable, tamper-evident tight seal to secure all enclosures. DURABLE AND EXTREME THICK - This bubble envelopes made from a durable, moisture resistant, multi-layer blend of polyethylene film. The interior built with extreme thick bubble lined wall construction for extra protection during transit. 100% SATISFACTION GUARANTEED - We provide 100% customer satisfaction guarantee.