This is an asthma inhaler spacer. It's a device to assist with medication for children and the elderly who may have difficulty inhaling. This one is a slightly larger type, suitable for children a bit older (5 years and up). I used it once, but haven't used it since because the cause of the issue was found to be something else. It has been washed, disinfected, and is in clean condition. It can still be used, so I'd like to pass it on to someone who is looking for one. Includes the instruction manual. Can be disinfected and washed. I plan to ship via regular mail. The shipping method may change depending on the size of the package. Please understand that this is a used item before purchasing. I bought it at a pediatrician's office for 2,000 yen. Holding chamber with anti-static valve, supporting the use of inhalers. - Model Name: AeroChamber Plus Flow-Vu - Function: Holding chamber with anti-static valve - Manufacturer: Trudell Medical International - Color: Blue - Purpose: For inhalers Thank you for looking.