- Fits standard D-shaped toilets: 4 types of U-shaped toilet seats. The hinge distance is adjustable (100-220mm), so you can adjust the cover just right. Fits most D shaped toilet seats. Please check the shape and size before ordering. - Durable and non-slip lid: the white toilet seat is made of urea formaldehyde with colorful surface and precise workmanship. It is lightweight, flexible and not easy to damage. - Quiet to use: with the built-in automatic lowering mechanism, both the seat and the lid can be closed quietly and prevents slamming, so you don't have to worry about the seat banging and making noise, especially at night. - Easy to assemble and clean: toilet seat with fixed top, whether for the elderly or a lady at home, it can be easily installed. Please check the shape and size of the toilet again before purchasing. And the easy removal system with one-button quick release makes thorough cleaning much easier and more effective. - Use scenarios: ideal for households with nighttime use requiring quiet operation; suitable for seniors or mobility-impaired users who need easy installation and cleaning; convenient for shared bathrooms that require thorough cleaning between uses.