hello,we have been using this product for many years. it never amazes us that something so simple can clean and polish at the same time. dull stainless steel on boats becomes shiny and beautiful with several wipes of the material. speaking of the material, it is a cloth that comes apart in any size you want for small or large jobs. no need to use the complete enclosed cloth for your cleaning job. a small tear off bunch will clean most metals and surfaces. be warned, it does leave a film on your hands and must be cleaned off. it has a good odor that tells you it is still on your hands. most sensitive people will probably use gloves when using this product. it cleans the surface of gelcoat of any marks as well as any metals and gets salt water off those surfaces with a protecting film. one wipe and using a clean cloth, a shine to last for awhile. the same idea is used by eagle and they both do the same jobs with the same results. it is your choice for purchase. great product, service, and delivery by crystal clear images.