I really like this spa, but the rim needs improvement or an attachment for comfort [SEP] This spa would have been given 5 stars had the rim not been so sharp and edge on the back of my legs. I used a towel to make it more comfortable, but a rubber slip on attachment would be the perfect answer to make this a 5 star spa. After an hour it automatically shut off. Not sure for spa safety or mine, lol, but it felt so good I just let it run and had planned on turning it off then anyway. I think for dry feet that might be too long as now I have a few sensitive areas that I worked on the rollers too well. I looked at other units, but hair curler roller systems just didn't look at all comfortable or practical. Definitely buy this spa!