I have an elongated Toto toilet and this bidet seat is replacing a standard elongated soft-close Toto toilet seat. There is a MASSIVE difference in comfort between the two. This bidet seat is easily one of the most uncomfortable I've sat on. I don't know if it's because the hole is smaller, the shape/curve, or if the seat is "thinner." This is a take-care-of-business-and-get-off seat while my original invited you to hang out and relax a bit. I'm also a bit concerned after seeing how many people have leaking handles, so all things put together, I will be returning it.

A message to Kohler: test Toto seats and replicate them. If your product had the comfort of my previous seat, I'd be more inclined to keep it, but otherwise this was made pretty cheaply.