Knowledge of sun umbrellas.

Sun umbrellas, also known as patio or market umbrellas, are designed to provide shade and protection from the sun's harmful UV rays. Here's a comprehensive overview of sun umbrellas:

Types of Sun Umbrellas

1. Patio Umbrellas: These are the common type, often used in outdoor dining areas, poolside, or on decks. They are typically large and have a crank mechanism to open and close.

2. Market Umbrellas: Similar to patio umbrellas but often with a more commercial look, these are used in outdoor markets, cafes, and restaurants.

3. Beach Umbrellas: Designed for use on the beach, these are portable and often have a pointed top for easy sinking into the sand.

4. Gazebo Umbrellas: Attached to a gazebo or pergola, these provide shade over a larger area and are often motorized for easy opening and closing.

5. Side Post Umbrellas: Instead of a central pole, these have the pole off to the side, providing more seating space under the umbrella.