Protect your roller-furled jib from attack by ultraviolet light and the weather. Easy to install and remove—the Snorkel is a must for protecting your expensive sail from eventual destruction by the elements. The Snorkel is a zip-on cover for roller-furled jibs. Made from durable fabric with a full length zipper. Snorkle covers are not intended for long term storage. Jibs must be furled tightly, have luff tension and be secure for windy conditions. Loose jibs and cover may cause chafing damage to sail. For the Hobie 18 SX, Hobie 20, and Hobie 21SE.