Bubble envelope is a padded envelope designed to protect its contents during shipping. It typically features a lightweight, durable exterior made from paper or plastic, with an inner layer lined with bubble wrap. This cushioning helps absorb shock and prevents damage to fragile items, such as electronics, jewelry, or delicate documents.

Bubble envelopes come in various sizes and can have self-sealing flaps for easy closure. They are often used for mailing items that require extra protection while still being lightweight, which helps keep shipping costs down. The combination of a sturdy outer layer and soft inner cushioning makes bubble envelopes a popular choice for both personal and business shipping needs.