31 inches and 19 or 20 oz
I would say he/she should use the size they are most comfortable with. If I were you I would make sure that the bat they chose is not to heavy for them and not to bulky. It really depends on how big you're six year old is.
It depends how tall the 11 year old is. To see if the bat is the right size for you, you should stand up straight with your arms by your side. Stand the bat up next to you. If the bat is the right size it will be level with your wrist. You should be able to hold your bat out with your weak hand without it shaking. If you can't do this, the bat is too heavy.
a 7 year old kid sholuld wear a 5 sized hat to a 7 sizedhat
You should get a -11 bat (which means that the weight is 11 ounces less than the amount of inches on the bat) and a glove that's about 10-11 inches.
It depends on the size and strength of the 10 year old. The range will usually be 28"-30" with a minumum bat drop of -9.
Bat SizeThe bat should be light enough for the child to control in full-swing with out it flying out of their hands,be able to stop the bat at any point up to the point of the wrists rolling. the length should be based on the child's heighth and reach.
the average size of a baseball bat is approximately 3 Ft.
DeMarini brand makes a youth baseball bat that is -5 size.
THE one YOU can HOLD
The average size bat is 34 inches long