Update 07/2019: Finally needed more since I replace both, once a week, in less than 5 minutes. Everything from my original note still holds true.Original These socks are as good or better than the ones I can buy at my local pool supply store , where 5 socks cost $12. I used to hose off the old socks due to their cost, but I just may toss these after a single use. Depending on the season, they catch a lot of pollen, dirt, insects, etc. that would otherwise make it to the filter. Before using thesSee full review