e a 7. Thank you Crocs for making such a nice looking shoe. Even scoot outside in them. Our almost 4 year old son loves this seat. These Bluetooth are very comfortable more comfortable than any other Bluetooth Ive ever had problem is is that they will turn off on their own with no authorization I dont disconnect them theyre disconnecting from the phone on their own accord,it just turn off simple and plain. When its too windy, too cold, raining or hot, hot hot outside, you can get your exercise, while watching the world go by the window, or better yet, watching your favorite television show. This product is complete garbage. You need to be warned so you dont fall prey like I did. This ensures not just a secure fit, but a tight seal. They are flat in sound which is greats for monitoring sounds.