Transition smoothly to an adult toilet seat with the antibacterial Richell Pottis Training Toilet Seat! - Brand: Richell - Product Name: Pottis Training Toilet Seat - Color: White/Gray - Features: Antibacterial treatment - Mounting Method: Screw-on. The included screws etc. are unused! After use, I wiped it down with toilet disinfecting wipes every time. I didn't use it very often. Accessories such as caps and fasteners are 【unused and unopened】. I used toilet seat covers on it so it wouldn't be cold. There is no stickiness, but you can faintly see the marks where the covers were attached. I think it's not a problem for use. Please check the 4th photo. It has been washed and disinfected with alcohol. I plan to ship it in this box, wrapped in a plastic bag, etc.