| 摘要 |
A ventilation device for a mattress (1) composed of two flat and parallel sheets (2, 3), between which an elastic insert is arranged, the sheets being mutually connected by a perimetric band (4), the device comprising a plurality of openings (8) which are formed at least in the perimetric band (4) and a strip (9) of breathable material which is arranged so as to cover the openings (8).
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