The Airfom 700 x 45-47C (Size 9) Soft Insert No more flat tyres! Without air in your tyres, how can you fall foul of thorns, nails and potholes? Air Fom is a patent pending, multiple layer foam insert that is designed to give you the same feeling as air By using high tech materials in a precision engineered structure, Air Fom simulates the pressure of an air-filled tire with the same dynamic ride that air gives To be fitted by a qualified cycle mechanic The Energy layer is what gives the Air Fom insert its incredible dynamic feel. Made from a high tech material that is fully recyclable, the energy layer can return up to 60% of the energy it receives in order to give you a fast ride experience with comfort and safety The Energy layer also works exactly the same in temperatures from -30c to over 50c in order to give you all weather performance and the material in the energy has almost no compression set. Leave you bike parked for a month and roll it out for a ride, the energy layer rebounds instantly to give you a perfect ride every time The Backbone gives the Air Fom insert the strength to take the big hits and come back for more. With its precision engineered shape and super lightweight, ultra-high density material the Backbone is key to a durable reliable ride experience The Foundation is critical to allow the Air Fom insert to fit precisely (correct size selection required for your rim and tire) and to cushion the rider from impacts. By riding on Air Fom for at least 2 years you will save the planet from many kilos of rubber waste in the form of discarded rubber tubes Air Fom uses our secret proprietary lubricant called Bead Butter. Bead Butter reduces friction between alloy and rubber by 80%. Bead butter lubrication lasts 30-45 mins after application Key to Easy Installation and Replacements The mechanic can also use Bead Butter to unmount the tire bead to remove the Air Fom inserts. Bead Butter is key to the Air Fom technology and system Bead Butter is fully organic, environmentally friendly and safe to handle.