As soon as the newest model Go Walk Slip On came out, I bought two pairs in cute colors, because the "slip on" characteristic is really convenient. After a while I started to notice that I was tripping frequently on the street, but also inside the house, on totally smooth parquet floors. I knew that this was caused by the shoes, but I didn't expect that one day I would trip and fall face first while walking, resulting to painful injuries and bruises. I then researched it online, and found out that not only many people are complaining about this, but also that a class action is on track to be launched in the States, by people who tripped and hurt themselves when wearing this exact model. It seems that this latest model has used a different type of sole (a composite of rubber and plastic) than previous ones, and it does cause tripping.