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Coil springs, also known as innerspring mattresses, have been a popular choice for many years due to their durability, support, and affordability. There are several types of coil springs used in mattresses, each with its own set of benefits:

1. Bonnell coils:

• Affordable: Bonnell coils are the oldest and most widely used coil system, which makes them relatively affordable.
• Durability: These coils are known for their durability and can provide consistent support over many years.
• Wide availability: Due to their popularity, Bonnell coil mattresses are available in various price ranges and firmness levels.

1. Offset coils:

• Contouring support: Offset coils are designed with an hourglass shape and have squared-off tops. This design allows them to conform better to the body's contours, providing improved support and pressure relief.
• Reduced motion transfer: Offset coils are linked with helical wires, which helps minimize motion transfer between partners.
• Durability: These coils are made with a strong gauge wire, making them durable and long-lasting.

1. Continuous coils:

• Durability: Continuous coil systems use a single wire that is looped into rows of coils, making them more resistant to wear and tear.
• Support: These coils provide consistent support across the mattress, reducing the chances of sagging over time.
• Affordable: Continuous coil mattresses are often more affordable than other types, making them a budget-friendly option.

1. Pocketed coils (also known as Marshall or encased coils):

• Reduced motion transfer: Pocketed coils are individually wrapped in fabric, reducing motion transfer between partners and providing a quieter sleep experience.
• Contouring support: Since each coil moves independently, these mattresses offer better contouring and pressure relief, conforming closely to the body's shape.
• Customization: Pocketed coil mattresses are often available with different firmness levels and can even have zoned support for targeted pressure relief.

Each type of coil spring has its own set of benefits, so the best choice for you will depend on your preferences, budget, and sleep requirements. It's essential to test different types of mattresses and find the one that feels most comfortable and supportive for your body.