Contour Wrap-Around Bath Support
Made of Medical Grade PVC, the Contour Wrap-Around Back Support is a great option for a small child with mild positioning needs, whether bathing or just simply sitting on the floor. Padded and available in two options, Lo-Back and Hi-Back, both include a harness for additional trunk support (Lo-Back = 2 point harness, Hi-Back= 4 point harness). This may be a good option for providing additional safety for a child who can already sit.
https://www.inspiredbydrive.com/product/contour-wrap-around-bath-support/