100% Brand new and high quality. Material: Silicone. Size: S: Diameter 7mm (Suitable for women with small nostrils, such as girls aged 10-16), M: Diameter 8mm (For adult women), L: Diameter 9mm (For women with larger nostrils). Color: As shown in the picture. Feature: 1. Improve respiratory efficiency: The silicone nasal wing support is scientifically designed to effectively expand the nostrils and improve respiratory efficiency. Especially for people who frequently snore or have nasal congestion, using this product can greatly improve their sleep quality. 2. Comfortable and Durable: This product is made of high-quality silicone material, which is soft and comfortable, without any irritation to the skin. And the silicone material is very durable and has a long service life. 3. Stereoscopic design: The silicone nasal wing support adopts a three-dimensional design, which can fully fit the nostrils and will not fall off during use. This allows users to use it in any activity, such as sleeping, exercising, etc. 4. Easy to clean: The surface of the silicone nasal wing support is smooth and dirt is not easily attached. After use, it only needs to be rinsed with water, which is very convenient. 5. Portable and compact: The product is compact and easy to carry, whether users are at home or traveling, they can carry it with them and enjoy clear breathing anytime, anywhere. Package Includes: 1pc nostril support device. Tips: There will be a model number on the surface of the product, which does not represent the product size.