I scratch my head when I see the word "walk in tubs".
Normally we climb into the tubs. How to walk in since there is no door? So I took a peep at the link. Oh! Got door one lar.
This is specially made for the elderly and the handicap. It is also great for children as you have less risk of them falling into the tub when they try to get in.
But then arh, this kinda special item is too expensive for me. I'll have to be content with my baby's plastic bath tub! LOL