Effortlessly and effectively cleans dirt and grime from Hypalon and PVC RIB tubes. Cleans fenders, mooring buoys and vinyl covers. Highly concentrated, 1 litre of product makes up to 50 litres of RIB Cleaner. Can be used between 5:1 and 50:1 depending on severity of dirt. Environmentally Responsible and Biodegradable Caustic, bleach and acid free.