USA Softball (slowpitch) Adult & youth slowpitch bat rules (2027)

ASA 2000, 2004, 2013 or USA Softball marks. The bat must be on the approved list and off the non-approved list.

What the stamps mean

• USA Softball mark (ASA 2000, ASA 2004 or USA Softball "All Games"): The most widely required fastpitch stamp. USA Softball events also require the bat to be on the approved list and off the non-approved list. The ASA 2013 mark isn't legal for girls' or women's fastpitch. Official list.

What size slowpitch bat?

Nearly all slowpitch bats are 34". Weight is the real choice: 26–28 oz suits most hitters.

Shop bats for Adult & youth slowpitch

These links open bats with the right stamp. Check the exact model against the official list before you buy. We earn a commission if you buy, at no cost to you.

Other Slowpitch softball divisions

• Senior slowpitch (Ages 40+)
• USSSA Slowpitch Tournaments (Ages 14+)
• USSSA Slowpitch League play (Ages 14+)
• USSSA Slowpitch Senior (Ages 40+)
• NSA Slowpitch Adult & youth (Ages 10+)
• NSA Slowpitch Senior (Ages 40+)
• Senior Softball-USA SSUSA tournaments (Ages 40+)
• Church / city rec league Local leagues (Ages 14+)

This page summarizes the published rule. Your league or tournament can add its own, and its ruling is final. Confirm your bat isn't on a decertified or non-approved list before you buy. More bat questions.