This round toilet seat features a built-in toddler seat, designed for potty training families with both adults and young children. The dual design allows kids to use the toilet independently with a single magnet that lets them easily pull down their seat, promoting confidence and self-reliance during potty training. Seamlessly switch between adult and child use. The seat fits most standard round toilets, measuring 16.9" x 14.3" with mounting hole distances between 5.2" and 6.3". For proper fit, measure from the front of your toilet to the center of the mounting holes. Specifications:Shape: Round (fits standard round toilets)Overall Dimensions: 16.9" L x 14.3" WMounting Hole Distance Range: 5.2 inches to 6.3 inchesMaterial: Premium thickened polypropylene (PP)Features: Built-in toddler seat with single magnet pull-down designClosing Mechanism: Soft slow close (whisper-quiet, no slamming)Hinge Type: Reinforced hinge with steady gentle motionInstallation: Top-mount easy fixing system (hardware included)Surface: Resists yellowing, fading, and scratchesCleaning: Wipe with soft towelRecommended For: Families with young children, potty training households