My 4 year old is in love with these shoes. He shows EVERYONE the eye and especially the dino footprint on the sole. That is his favorite part. He has never complained about them being uncomfortable or slipping and he can run just the same in them as his other sneakers. The light up eye died after about 3 months, sad but we still like them. I was really surprised it died because I have some other shoes of my daughter's that still light up after a couple of years. Oh well. Also, there is already some serious wear and tear on the heel part of the sole, an actually hole type rip is forming. Not cool. We will probably try another brand next time but they have been super fun.