• Used as a breathing exerciser to increase lung capacity in patients
  with  decreased lung function
• Made from rigid, non-toxic medical grade PVC
• Specially designed with 3 stage chambers to provide more efficient
  exercise  to patient at a step up basis
• Device comprises a base and a central part with a 3 stage chamber,
  each containing spheres of different sizes, weight and colour
• Provides lung exercise on a step-up basis, as the spheres rise  
  proportionately to the breathing effort exerted by the patient
• Can be dis-assembled into parts for cleaning and disinfection
• Non-sterile