For the longest time the Swimline brand of liners were promoted that there standard bead would accommodate and Esther Williams pool and we sold many Swimline liners to be used on Esther Williams pools and they worked fine. About 2-3 years ago Swimline stopped promoting the fact that there liner could be used on an Esther Williams pool, I am not sure if Swimline changed there bead or if they got burnt on a few pools which made them change there wording. From my understanding Esther Williams uses a little thicker bead than the standard bead.