Approved bat list for 2018
The bat standards for Little League and Travel Baseball will changed as of January 1, 2018. Any bats that you have from past years can no longer be used. All bats must have the new USA Baseball logo (Click here to see logo). Any solid one-piece wood barrel bats do not require the USA Baseball logo. Here is a link to the list of approved bats for 2018: https://usabat.com.
Here are a few links that have detailed information about the new USA bat standards:
https://usabat.com/faq
http://www.littleleague.org/learn/equipment/baseballbatinfo.htm
http://www.littleleague.org/media/llnewsarchive/2015/May-August/Little-League-USA-Baseball-Bat-Standard-2018.htm?utm_source=ll.org%20bat%20page&utm_medium=2018%20USA%20Baseball%20Bat%20Standard%20Link&utm_content=LL.org%20Bat%20Resource%20Page
http://www.littleleague.org/learn/equipment/baseballbatinfo/batrules.htm?utm_source=Bat%20Information%20-%20Rule%201.10%20&utm_medium=Rule%201.10&utm_content=Bat%20Information%20-%20Rule%201.10
USA Baseball Logo