FWIW as a former swimmer I can tell you that "real life" goggles are about as reliable as the AG ones (not very!). They frequently break, leak, leave rings,etc. so one could argue that they are indeed quite authentic!
My DD has been very happy with her swim set for Chrissa, other than having a hard time getting the swim cap on, but then again, she has a hard time getting her own swim cap on. lol
"Mom" to Nellie (who jumps from staying true to her historical character and being modern...lol)