Bangles are a type of jewelry that are typically worn on the wrist. They are usually circular or semi-circular in shape, and can be made from a range of materials, including precious metals, glass, plastic, and stone. Some common types of bangles include:

1. Metal bangles: bangles made from precious metals such as gold, silver, or platinum.
2. Glass bangles: colorful, lightweight bangles made from glass, often worn in multiples.
3. Stone bangles: bangles set with precious or semi-precious stones, such as diamonds, emeralds, or rubies.
4. Wooden bangles: rustic, lightweight bangles made from wood.
5. Plastic bangles: colorful, lightweight bangles made from plastic, often worn in multiples.
6. Beaded bangles: bangles made from a series of beads strung together on a cord or string.
7. Cuff bangles: wide, rigid bangles that encircle the wrist and have an opening.

Bangles are often worn for both fashion and functional reasons, and can be paired with a range of outfits to create a desired look. They can be simple and understated, or elaborate and ornate, and can be made from a wide range of materials to suit a range of tastes and styles. In many cultures, bangles have symbolic meaning, and are often given as gifts to commemorate special occasions or to express affection.