Ventlab BreatheRite Rigid Valved Holding Chamber is made of anti-static plastic that decreases the particle adhesion in the tube, allowing more of the medication to reach the patient. This MDI spacer makes MDI aerosol therapy more effective by maximizing drug delivery to the distal airways. Convenient, easy to use, and portable. Wash in warm soapy water and allow to air dry between uses. Spacer only.