6 Reasons Why Polyfoam Cases are Great 

1. Lightweight: Polyfoam cases are lighter than hardshell cases, making them more comfortable for musicians who need to transport their guitars frequently.

2. Shock Absorption: Polyfoam is known for its shock-absorbing properties. It can help protect your guitar from minor impacts and bumps during transportation.

3. Thermal Insulation: Polyfoam provides some degree of thermal insulation, protecting your guitar from extreme temperatures.

4. Affordability: Polyfoam cases are often more affordable than high-end hardshell cases, providing a cost-effective option for protecting your instrument.

5. Variety of Styles: Polyfoam cases come in various shapes and sizes to accommodate different guitar types and styles. They often have padded interiors to provide additional protection.

6. Water Resistance: While not completely waterproof, polyfoam cases typically offer some degree of water resistance, protecting the guitar from light rain or spills.