This revolutionary cleaner lets riders wash their bikes where they want to - in the sun. Most bike wash products can be used only on cool days or in the shade. Sunwash^™ Bike Soap has a unique sheeting action that prevents hard water spots, and rinses clean even on hot days in the sun. Safe for use on all vehicle surfaces including denim paint. Biodegradable. 8 fl oz (236 ml) Bottle.