This is a potty training seat from Threeppy (3COINS). I am selling it because it didn't fit the toilet in my house. It is new, but I have opened the bag once to check the size. Please understand. Item Description ● Easy to install, just place it on the toilet seat. ● Soft material for comfortable seating. ■Specifications■ Age Recommendation: 3 years and older Suitable Size: ＜Inner dimensions of adult toilet seat＞ Approximately 25.5cm or more in depth x 20.5～23cm in width ※ May not be compatible with some specially shaped toilet seats. Heat Resistance: 50℃ Weight Capacity: Approximately 15kg