The HyperVent™ bag is designed to facilitate the treatment of hyperventilation and replace the paper bag currently used. Comprising a housing with integral mouthpiece ensuring it is easy for the patient to hold, connected to a strong plastic bag. Unlike paper bags, the HyperVent™ bag overcomes the danger of hypoxia, inhalation of foreign bodies and potential source of infection. It also does not disintegrate with use and is medically clean.