PURPOSE: To provide the non-puncture tube which will not be punctured even if a nail and the like are pierced in, and prevents the grounding area of the tire against the surface of a road from being widened, and also prevents its rolling resistance from being increased as compared with a tube formed out of single foamed sponge rubber even if it is being subjected to load during a vehicle is running, and it has been deformed under compression for a long time.

CONSTITUTION: This invention is concerned with a non-puncture tube to be sealed in a space for cushioning a wheel, which is formed by assembling a rim with a tire, and it is integrally formed while a non-extensive thin piece 42 formed out of fabric, solid rubber and the like is disposed at least in one step in the vertical direction within single foamed sponge rubber 41.