I only tried it on and then stored it. I have the same item, but for some reason, this one is a little small. It's too small for children, but too big for adults! For reference: Children/Women's size: Diameter 1.0 Adult size: Diameter 1.2 Earplugs with pressure-adjusting function to support a comfortable flight on airplanes. - Product Name: EarPlanes - Quantity: 1 pair (2 pieces) - Size: Approximately 2.7mm long, approximately 11mm in diameter - Material: Soft material - Purpose: With pressure-adjusting function Thank you for viewing. I have various items for sale. Feel free to message me if you'd like to combine shipping! For pressure headaches, pressure relief, sound sleep, airplanes, travel, hospitalization, snoring, weather-related pain, noise, travel, etc.!