Protecting your pool liner starts with what goes underneath it. The Blue Wave 12-ft x 24-ft Oval Pool Liner Pad creates a dependable barrier between your vinyl liner and the ground debris that causes costly punctures. This pre-sized, serged-edge felt barrier delivers consistent coverage without gaps across your entire oval pool floor. This Gorilla Pad is precisely built for 12-ft x 24-ft oval above ground pools, arriving pre-sized without the need for cutting, trimming, or guesswork required. The white felt construction provides a protective pool underlayment designed for ground debris protection rather than cushioning — keeping your liner safe season after season. The pad works on grass lawns, dirt bases, gravel surfaces, and concrete pads, making it a versatile fit for any backyard installation. Whether setting up a new pool or replacing an aging liner, the pad installs without cutting or modification. For end-of-season care, allow the pad to dry completely before folding and storing in a dry location. Backed by Blue Wave's 90-day limited warranty, U.S. customer support and over 35 years of pool industry experience.