I love my shape up athletic shoes and I have 3 pairs so I thought I'd give the sandals a try. I have worn them for 2 days now after receiving them quickly, and they are very comfortable. Mine seemed true to size. I walk 2-4 miles a day at my job and have lost 45lbs in the past 6 months wearing shape ups. I cannot recommend them enough and have had a few girlfriends who have witnessed the weight loss and purchased them as well.