Then hang to dry. Somehow this seems to strengthen the fibers and the fabric softener adds in not only softness, but maintaining shape. Additionally, watch what you are buying. Plus, I have found the Microfiber blends last far longer than all others I have tried. One other fugal note, the more expensive the hose, doesn't mean the better, nor the cheaper the worse.
Many plants actually manufacture the same product with various names and price points.
You can even get some pretty good deals online too. The site allows you to check out their line of hosiery and purchase online. It was a great time to stock up, plus they deliver straight to your door. But I found that if I wore a heavier type of hose it usually lasted longer. AND I got the stamps for the frequent buyer.