[TYPE] Fits most popular hull styles with six sizes [MATERIAL AND STITCH] Made of ShoreMaster 7.25 oz. 600D heavy duty marine grade polyester fabric with urethane coated. Treated for water repellency, UV and mildew resistance. Double stitched seams with straps reinforced to decrease water entering from the stitching. Every top seam is inforced with 1 inch poly-web straps for a long haul. Extra protective reinforcements on the rear corners, the middle and the front gives an extra protection for key parts. [TRAILERABLE AND EASY TO USE] Perfect for both trailering and storage. Elastic cord in bottom hem gives a tight fit. Rear air vents allow inside moisture to escape. Free mesh storage bag included. Quick release buckles and strap system on the cover ensures easy fitting. 6 adjustable straps for Model A, 7 for Model B/C/D/E, 8 for Model F. [RECOMMENDATION AND WARRANTY] Model A/B/D/E/F are for outboards and I/O. Only Model C has a cutout design for outboard. Please measure your boat first and check the size chart in our description. Move Up To Next Size if the measurement falls on maximum length. To improve waterproof effect and extend the lifespan of cover, it's highly recommend to use support poles to avoid pooling from water in center of cover. Customer friendly 3-year limited warranty. Any questions, please contact us anytime. [CARE AND MAINTENANCE] Please do not allow the product to get in touch with sharp objects, chemicals, gasoline, or liquids. Spot clean with water, do not use detergent. Hang cover to dry and use storage bag to keep cover clean and stowed away when not in use. Be sure your boat is thoroughly dry before covering for long time storage.