Fits well on my 5 year old but must warn you that he has quite large hands and is close to tallest in his kindergarten class. Will probably last him another year or so. He use it for BMX racing and general bike riding. He loves the flames.They were exactly what my son was looking for. Reading the reviews it was hard to determine which size to get, but my son just turned 7 and is average size and these are the perfect size with a little room for growth.Medium fits my 8 year old lacrosse player perfectly.it is so nice except somewhat large for my four years son, and my son love it!fit great and protect my 8 year old daughters hands. Look cool too.Fit my 7 year old perfectly. Just what he wanted to use to ride his bikes. He does need a little help fastening the velco.Perfect fit. Well constructed. Boy loved it.Great fit