Infant Bath Tub Seat

bath tub
A tub, usually installed in a bathroom, in which to bathe
A bath ( or ), bathtub (AmE), or tub (informal) is a plumbing fixture used for bathing. Most modern bathtubs are made of acrylic or fiberglass, but alternatives are available in enamel over steel or cast iron, and occasionally waterproof finished wood.

infant
A very young child or baby
A person who has not attained legal majority
(infancy) the early stage of growth or development
baby: a very young child (birth to 1 year) who has not yet begun to walk or talk; "the baby began to cry again"; "she held the baby in her arms"; "it sounds simple, but when you have your own baby it is all so different"
An infant or baby is the very young offspring of humans. A newborn is an infant who is within hours, days, or up to a few weeks from birth.
Denoting something in an early stage of its development

seat
A sitting place for a passenger in a vehicle or for a member of an audience
a space reserved for sitting (as in a theater or on a train or airplane); "he booked their seats in advance"; "he sat in someone else's place"
show to a seat; assign a seat for; "The host seated me next to Mrs. Smith"
A thing made or used for sitting on, such as a chair or stool
The roughly horizontal part of a chair, on which one's weight rests directly
be able to seat; "The theater seats 2,000"