A flexible enclosure designed to cover the bed of a neonatal or small child to provide an enriched environment of oxygen (O2) to increase the patient's O2 uptake. It is connected to an O2 source and may be used concurrently with increased humidification and temperature control. It typically consists of a metal frame covered with transparent plastic, the tubing, and may have built-in humidification. It is used for the treatment of breathing disorders in infant and paediatric patients permitting them movement without restriction. This is a reusable device.