When it comes to practice gear for young soccer teams, there are many choices. Your league may provide you with some of the items you need, but we’ve put together a list of the most commonly used items by coaches so you don’t have to spend tons of time researching. Buy the items we list, or use them as a jumping off point to find similar items.
You can use the US Youth Soccer guide showing recommended Goal, Field, Ball sizes and match durations for various age groups to pick the correct ball size for your team.
http://www.usyouthsoccer.org/coaches/goalsizes/