The Philips OptiChamber Diamond with medium mask is an anti-static inhalation chamber designed specifically for children aged 1-5 years. This medical device helps deliver asthma medications effectively while providing comfort during use. This device is part of the Philips Respironics line of respiratory care products. The medium-sized mask is specifically sized to fit children between 1-5 years of age. As this is a medical device for delivering respiratory medications, please consult with a healthcare provider for proper usage instructions.