It took a lot of practice for him to be able to do this. It was not easy at first. We've had that green cube chair for years and have used it for many things. It makes a great transition seat for Caleb when he is getting into the bath and he also uses it to help pull himself out.
Here is a link to see these chairs on Amazon. You can flip it different way to get different heights. We use it all the time.
Independence with the bathtub has been so great. It has truly saved my back! I hope this video is helpful to some of you. Several of you have asked to see how Caleb gets in and out of the car. I'll work on that one soon. Feel free to leave other suggestions if there is something else you want to see.