Fastpitch softball bat sizing and stamps
Length and drop by age for fastpitch, plus which stamp USA Softball, USSSA, NSA, PGF, Little League and high school require. Last checked Oct 23, 2026.
Length and drop by age
| Age | Length | Typical drop |
|---|---|---|
| 8–9 | 26–28" | -12 to -11 |
| 10 | 28–29" | -12 to -11 |
| 11–12 | 30–31" | -12 to -10 |
| 13–14 | 31–32" | -11 to -10 |
| 15–16 | 32–33" | -10 to -9 |
| 17+ | 33–34" | -10 to -8 |
Source: DeMarini fastpitch guide. Softball organizations don't set drop limits, so pick the drop by strength.
Which stamp?
| League | Division | Stamps allowed | Drop limit | Max length |
|---|---|---|---|---|
| USA Softball | Girls (JO) & women's fastpitch | USA Softball | — | 34" |
| USA Softball | Boys (JO) & men's fastpitch | USA Softball | — | 34" |
| USSSA Fastpitch | All ages | USSSA FP, Wood | — | — |
| NSA Fastpitch | All ages | NSA, Wood | — | 34" |
| PGF ⚠️ varies | National qualifiers & Nationals | USA Softball | — | — |
| Alliance Fastpitch ⚠️ varies | National & sanctioned events | USA Softball, USSSA FP | — | — |
| Little League Softball | Tee Ball, Minors & Majors | BPF 1.20, Wood | — | 33" |
| Little League Softball | Junior & Senior League | BPF 1.20, Wood | — | 34" |
| Babe Ruth Softball | All divisions (6U–18U) | Official Softball, Wood | — | — |
| High school softball (NFHS) | Varsity & JV | USA Softball, Wood | — | — |
| College softball | NCAA (all divisions) | USA Softball | — | 34" |
Watch out for
- NSA needs the NSA 2012 logo. A USA-only or USSSA-only bat isn't legal.
- NCAA bats must also be on the current NCAA approved list.
- High school bats must not be on USA Softball's non-approved list, and barrel wraps are banned (April 2026).
- Little League Softball requires "BPF 1.20" printed on non-wood bats.
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