Describe: Material: silicone . Size S5: 7mm in diameter (suitable for women with smaller nostrils, such as girls aged 10-16) M6 size: diameter 8mm (adult women) L7 size: 9mm diameter (suitable for women with larger nostrils) Color: as shown in the picture feature: 1. Improve breathing efficiency: The silicone nose stent is scientifically designed to effectively expand the nostrils and improve breathing efficiency. Especially for people who often 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. Three-dimensional design: The silicone nose bracket adopts a three-dimensional design, which can fully fit the nostrils and will not fall off during use. This allows users to use it during any activity such as sleeping, exercising, etc. 4. Easy to clean: of the silicone nose bracket is smooth and dirt is not easy to adhere to. Just rinse with water after use, 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 and anywhere. Comment: 1. Manual measurement tolerance is 2-5g. Please don't mind your substitution. 2. Due to differences between different monitors, the image may not reflect the actual color of the item. Thank you so much! 3. SKU color is the color of product packaging Package includes: 1 piece nostril support.