Philips Respironics OptiChamber Diamond, a holding chamber device with a valve for use with inhalers. Usage: Designed to improve the delivery of nebulized medications directly to the lungs, making it ideal for children and adults who have difficulty using inhalers directly. Features: It contains an anti-static material that holds the nebulizer for longer to facilitate inhalation, in addition to low-resistance valves for easy breathing. Age group: This model includes a medium-sized mask suitable for children aged 1 to 5 years. Compatibility: Equipped with a flexible adapter that fits all metered-dose inhalers (pMDI)