Independent training: This children's toilet seat is specially designed for 1 - 7 year old children, both boys and girls can use it. You don't need to buy two. It can help children go to the toilet independently, develop independence and improve hand and foot coordination. Environmentally friendly: this children's toilet seat is made of PP material, which is BPA-free, non-toxic and very environmentally friendly. We have also rounded the corners of the edges of the toilet seat, so they will not scratch your child or the toilet when you install and remove them. Stable and comfortable: the children's toilet seat attachment has 4 non-slip rubber and holders on the bottom that hold the attachment on the toilet and does not slip easily. The PU cushion is soft and comfortable, flexible and lasts for a long time. There are carrying handles on both sides of the potty trainer so that children can easily grip it and move it safely and comfortably. Scientific design: the ergonomically designed, 13 cm high backrest of the toilet trainer does not affect the child's bone development and is safe and comfortable. The 7 cm high splash guard on the front of the children's toilet seat attachment prevents urine from splashing out and can be used by both boys and girls. Universal - This toilet seat fits 99% of all toilets on the market, including all V, U and O toilets and some square toilets. Please measure your toilet carefully before purchase to ensure that our children's learning potty toilet attachment fits your toilet.