Material: High-quality silicone, brand new and safe for use. Size S5: 7mm in diameter (suitable for women with smaller nostrils, such as girls aged 10–16) Size M6: 8mm in diameter (ideal for adult women) Size L7: 9mm in diameter (suitable for women with larger nostrils) Color: As shown in the picture Features: 1. Improves breathing efficiency: Scientifically designed to gently expand the nostrils, helping to enhance airflow. Ideal for individuals experiencing occasional snoring or nasal congestion, promoting better sleep quality. 2. Comfortable and durable: Made from soft, high-quality silicone that is gentle on the skin and provides long-lasting use. 3. Three-dimensional design: Ergonomically shaped to fit securely inside the nostrils without slipping, suitable for use during sleep, exercise, or daily activities. 4. Easy to clean: Smooth surface resists dirt buildup. Simply rinse with water after use for quick maintenance. 5. Portable and compact: Lightweight and easy to carry, making it convenient for home use or travel. Notes: - Manual measurement may result in a slight variation of 2–5g. - Due to differences in monitor displays, the actual product color may vary slightly from the image. - The SKU color refers to the packaging color. Package includes: 1 x Nostril Support