A lightweight cover works great — until it rains. The RIB System helps solve that. By creating a raised support structure beneath your cover, the RIB System encourages water and debris to run off more efficiently while reducing strain on the fabric. The result is better protection for your pontoon and a longer-lasting cover. Our upgraded adjustable mounting system fits pontoon rails up to 1.6" wide, making it compatible with more boats than ever before. Designed for everyday dockside protection. ✓ New adjustable rail mounts✓ Fits pontoon rails up to 1.6" wide✓ Reduces water pooling and cover sagging✓ Helps extend cover life✓ Improves airflow beneath the cover✓ Quick, tool-free installation What's Included: • (2) Adjustable rail mounts• (1) RIB pole Not intended for heavy storms, high winds, trailering, or long-term storage.