2 Masks included: The inhaler spacer comes with 2 masks, each designed for cats and small dogs. The masks are made from silicone and have a round shape to provide a comfortable fit for your pet. Inhaler spacer: This spacer is designed to be used with metered-dose inhalers (MDIs) for cats and small dogs. It helps to deliver the medication directly into your pet's lungs, improving the effectiveness of the treatment. Round shape silicone mask: The silicone mask is soft and flexible, making it comfortable for your pet to wear. It has a breathing indicator that lets you know when your pet is inhaling the medication. Feline aerosol chamber: The inhaler spacer has a feline aerosol chamber that helps to distribute the medication evenly throughout the air. This ensures that your pet receives the correct dosage of medication every time. Easy to use: The inhaler spacer is easy to use and can be attached to your inhaler. It is portable, making it convenient to take with you when you travel with your pet. Color: Transparent-White & Blue. Material: Plastic. Package Contents: 1 * Inhaler Spacer, 2 * Masks. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.