National Geographic : 1943 May
Tough? These new SYNTHETIC RUBBER soles wear twice as long as leather! EVERY general knows that a soldier is no tougher than his feet. That is why, back before the war, both the Army and Marine Corps made rubber soles and heels "regulation" on field shoes - because tests proved good rub ber long outwore any other material on the march. And it is easier on the feet than old style hobnails. But when Uncle Sam began calling millions of men to the colors, Goodyear foresaw that our troops might eventually be deprived of these longer-wearing, foot-cushioning soles as the na tion's rubber reserve dwindled. So many months ago we set our Research Department the task of de veloping comparable soles and heels from Chemigum, Goodyear's own synthetic rubber. Now after many trials Goodyear is ready with Chemigum soles and heels that not only wear as long as natural rubber - more than twice as I long as the best leather- but possess a plus advantage not found in either rubber or leather. This is Chemigum's impermeability to acids, oils and greases that cause both leather and rubber to soften and swell. As a result, Chemi gum soles and heels are definitely superior for wear in engine rooms, auto repair shops, gasoline stations, oil fields, barnyards and in many industries. Thus once again Goodyear has anticipated an emergency and is ready with the answer. Should the rubber shortage force the Army to give up its present shoe construction, Chemigum soles and heels can be pro Sduced as rapidly as ade quate quantities of this synthetic rubber can be made available. And with the expanding output of new synthetic plants, built as part of the gov ernment's rubber program, these better shoe products will ultimately be available to all. GOOD IEAR THE GREATEST NAME IN RUBBER Cbemiogm-T . M. The Goodyear Tire & Rubber Company I I _ -'