The StormPro Trailerable Boat Cover by Classic Accessories provides a heavy-duty cover designed for both long-term storage and highway travel. The Classic Accessories StormPro Cover gives you peace of mind, no matter what the weather dishes out. Trailerable Boat Cover â Fits outboard ski boats 17'6" - 18'6"L, beam width to 89"W. Full cut to allow extra room for accessories. Marine-Grade Fabric â Won't shrink or stretch. Designed for extra durability. Fabric coating technology for max water repellency, UV protection, mildew resistance, and all-weather protection. Includes Support Pole â The included support pole prevents water from pooling and helps preserve the cover. Dual rear air vents with built in stiffeners reduce wind pressure and allow inside moisture to escape. Protective Cover â Elastic cord gives a tight, custom fit, while the integrated buckle and strap system allows for easy fitting and trailering. Adjustable straps snap into quick-release buckles on the cover. Accessories Included â Support pole, storage bag, tie-down straps, and integrated motor cover included. Fabric coating for water repellency, UV protection, & mildew resistance Support pole prevents water pooling & helps preserve cover Integrated buckle & strap system for easy fitting & trailering | Classic Accessories StormPro Heavy-Duty Trailerable Outboard Ski Boat Cover, Fits 17'6"-18'6"L, 89"W Boats