This strap put my mind at ease while we were at the shore. I felt like it was one thing to worry about as my sons jumped in the waves; the glasses were not coming off! I bought two in different colors so we knew who's glasses belonged to each kid. Which was great... when we lost a pair (ugh!) I love this company and their customer service. When I found out the straps were included in the guarantee it made the loss hurt a little less. We will continue to buy babiators for every stage!