Abstract: This invention comprises an inner tube, a mesh sack, and a plurality of air-filled elastic balls. The mesh sack, preferably made of rubber, is randomly satiated with the elastic balls, and is placed abutting the tread portion (or radially outward portion) of a conventional pneumatic tire. The inner tube is placed abutting the interior portion (or radially inward portion) of the tire, so that the elastic balls are interposed between the inner tube and the radially outward portion of the interior of the tire. Inflation of the inner tube to a specified pneumatic pressure causes the elastic balls to compress against the radially outward interior portion of the tire and each other. The random placement of the elastic balls creates multiple, three-dimensionally independent layers of “air-pockets.” These air-pockets will minimize the effects of punctures from the tread-portion of the tire as well as the sidewall portions of the tire.