Medical supply store, supermarket or online store.
1. Medical supply store: Disposable headgear is mainly used for medical examinations, surgeries and other occasions, so it can be purchased in medical supply stores.
2. Supermarket: There are also some medical supplies counters in supermarkets where you can buy disposable headgear.
3. Online stores: Many online stores sell disposable headgear, the price is relatively affordable, and you can choose headgear of different specifications and materials.