Envelope

An envelope is a flat paper container with a flap that closes along one edge. Envelopes are typically used to hold paper documents, such as letters, checks, or receipts. They can also be used to hold small items, such as coins or jewelry.

Envelopes are made from a variety of materials, including paper, plastic, and metal. Paper envelopes are the most common type, and they are typically made from lightweight paper stock. Plastic envelopes are also popular, and they are often used for mailing items that are fragile or valuable. Metal envelopes are less common, but they are sometimes used for security purposes.

Envelopes come in a variety of sizes, shapes, and colors. The size of an envelope is typically determined by the size of the paper it is designed to hold. The shape of an envelope can vary, but the most common type is the rectangular envelope. The color of an envelope can be any color, but white and brown are the most common colors.

Envelopes are used for a variety of purposes, including:

* Mailing letters
* Sending checks
* Storing small items
* Decorating

Envelopes can be purchased in a variety of places, including office supply stores, post offices, and online retailers.