I give this product a two star solely because the cushion inside the pulltab/collar is made so purely that everytime I slip my foot inside the cushion moves down which creates a bump. After the second or third wear I was always uncomfortable walking around as I always felt like there is something nudging the top of my heel. I love Sketchers but I am very very disappointed with this product.<br /><br />I only bought Go Bionic 2 because I have been wearing Go Bionic 1 for over 2 years non stop and loved how amazingly comfortable they felt on a daily use for work and exercise. They really got it wrong with this model and its heavily flawed. Please let Go Bionic 3 be flawless like the first one. I will wait for Go Bionic 3 and buy that for sure as Sketchers has only failed me once after purchased so many models.<br /><br />Note: If you look closely in the photos you will see how the pulltab/collar cushion inside the shoe has been pushed forward which made stop wearing them for good