I was way too woozy for at least a week after my first pkr to have managed without the shower chair, and was really glad I had it when I broke my leg. However, all that scrunching around with my large self especially with struggling to get up one legged, meant that by the time my ankle healed our master bath fiberglass shower floor was overstressed, and it finally cracked during my very first shower post op after my left knee was done. I was already feeling well enough that I really didn't need it, so never bothered to try it in the tub in the other bathroom.