I have a pair of athletic Knix underwear. They end up giving me a wedgie and riging way up my back every time. I have had the product for a while, but not worn/ washed often. The "seamless" edges have delaminated and come loose from the rest of the underwear in the crotch. I contacted them to share that the product has failed, and they asked how I wash it (I was it the same as I do my cheap underwear that has lasted way longer) and said it sounds like I used it enough to justify the damage. I will not be purchasing another product from Knix. They market a quality product, and charge accordingly, but clearly the product they create does not match that, and they don't stand behind it.