When your little man puts these on you will smile - they are so nice looking but the squeaky heel is what makes them awesome! He can wear them everyday all the time (we have testers here who have a ball with them) and its great because you can hear where he is at all times. And, if he gets under your feet and you don't know it - you can hear the squeak! (In addition, adults can easily pull out the squeaker in the heel...and it can be reinserted at your liking.) They are comfortable and fit perfectly with the velcro strap. To measure your child for the correct size, here is the info below. Make sure you measure while child is standing from heel to tip of longest toe. Allow 1/4" for socks and/or growth: Size 3 = 4 3/4" long, average 6-12 months old
Size 4 = 5 inches long, average 12-16 months old
Size 5 = 5 1/8 inches long, average 16-20 months old
Size 6 = 5 1/4 inches long, average 20-24 months old
Size 7 = 5 1/2 inches long, average 2-2.5 years old These shoes are comfortable and flexible with non-skid soles. These are adorable!