I can’t attest to longevity as this just arrived today! It is replacing 2 other speedo swim suites I have heavily used for 3+ years for lap swimming and I have sadly outgrown them otherwise I would have no need for a new suit. I tried on the TYR swim suites and they were horrific in size and fit. As soon as I tried on this swim suit it was a perfect match and fit to my body! Breast size 45.5 and hips are 49.5”— so I purchased the size 18 and if this swim suit holds up as well as my other 2 than I will be buying more. I found the size chart to be accurate, I just spend the last month shopping for an entirely new wardrobe so I can 100% say with confidence that no other brands across any women’s clothing brands are ever accurate.