Volume, measured in liters, is your board’s overall foam. It’s the magic number for float and paddle power. More liters mean an easier paddle, a more stable platform, and better wave-catching, especially for beginners or in smaller waves. As you progress, you’ll likely drop volume for more maneuverability. Think of it like this: high volume is your reliable friend on a mellow day; low volume is for when you want to really throw the board around.