The screw holes did not line up properly on a few of the pieces. Up to my ankles in water dry as a bone. In my 30s I had foot pain & a fellow club member, who said her job was that of a "pharmacist for feet," advised me to put arch supports in my shoes. I tried it in the backyard where my signal is 50% and still worked flawlessly. Thats not to disparage the ATH-M50 series. What I have discovered over the years of using this product is there are two things I would suggest, 1 to the manufacturer and one to the consumer. A bit wobbly to put on. While nearly invisible, I dont like to be an advertiser unless I want to wear advertising clothing. I wouldn?t work out in this size. I hear every cue.