Double-layer PVC construction in SUP boards offers a blend of durability and performance. The additional layer enhances the board's stiffness, making it sturdier and less prone to bending, which translates to better speed and stability on the water. This robust build quality also means the board is less likely to leak, ensuring a longer lifespan for your aquatic adventures. While it may be slightly heavier and more costly, the trade-off is a reliable and high-performing SUP board that stands up to the challenges of the water.