Marine 31 Gel Coat Spray Wax Plus Marine 31 Gel Coat Spray Wax Plus is an easy-to-use spray on boat wax that provides exceptional UV protection and a slick, high-gloss finish on your boats gel coat surfaces  standard and painted. Formulated using real carnauba wax and protective polymers, Marine 31 Gel Coat Spray Wax Plus provides the utmost in surface protection while only taking minutes to apply. Regular application will keep your boat looking new and protected against salt degradation and UV rays. Marine 31 Gel Coat Spray Wax Plus is harbor-safe and eco-friendly. 20 oz. Made in USA