Used about 10 times. There are no noticeable stains, but please refrain from purchasing if you are concerned. [Antibacterial Treatment] This potty training seat has been treated with antibacterial processing, allowing for clean use. It's designed for children's peace of mind. [Smooth Transition] Designed to facilitate a smooth transition to an adult toilet seat, supporting toilet training. [Easy-to-Use Style] A sitting-type potty training seat that makes it easier for children to use the toilet independently. - Brand: Richell - Product Name: Potty Training Seat - Target Age: 1 year 6 months and up - Antibacterial Treatment: Yes - Style: Sitting type - Features: Design for smooth transition Thank you for viewing.