Grepl International

1. P Trap: A P-trap is a plumbing fixture used in toilets, sinks, and drains to prevent sewer gases from escaping into the room. It's part of the toilet's plumbing system, not the seat.

2. Toilet Seat: This is the seat that you sit on when using the toilet. Toilet seats can come in various shapes and designs, but they are separate from the P-trap plumbing.

It’s possible you're referring to a specific type of toilet that uses a P-trap