Glove & mitt sizing for high school & adult

Position-true patterns, durable leather, and a fit that matches how you play — not a youth hand-me-up. Reviewed October 23, 2026.

Parent disclaimer: Sizing charts are starting points. Brands and hand shapes differ — try gloves on when you can, and confirm any mitt rules with your league or coach. We don’t give medical advice.

1. Age snapshot

High school and adult players should buy for position first. Adult lengths are standard; the decision is pattern (infield vs outfield vs mitt), web style, and break-in preference. Pair with legal bats — see our BBCOR / NFHS notes for HS hitters.

Typical fielder range: Adult fielder gloves generally 11.5–12.75″ by position. First-base mitts and catcher’s mitts use separate measuring conventions.

How to measure (hand & glove)

Charts below are parent buying ranges — not medical or coaching prescriptions. Brands vary; try on when you can.

2. Sizing by position

First base often uses a dedicated mitt (larger, shallow scoop) once kids play there regularly — usually introduced more seriously around 11U–14U.

3. Quick buying checklist

  1. Know the primary position (or buy a versatile middle size if they float).
  2. Match the inch range above — then prioritize a glove they can close.
  3. Soft / easy-break-in leather beats a stiff “pro” model they can’t squeeze.
  4. Confirm throw-hand (RHT vs LHT) before checkout.
  5. Plan break-in time before the first tournament weekend.

Where to shop (compare retailers)

Search links only — we don’t invent prices or stock. Know your inch size and position first.

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Training resources

Glove work sticks faster with reps — soft toss, fungoes, and cage time. Find local cages and indoor facilities on our sister directory:

Browse batting cages near you →

BattingCagesNearMe.com is our batting-cage directory (same family as CheckMyBat) — handy when you’re breaking in a new glove or working on transfers.

Related bat guides

More glove sizing

Page reviewed: October 23, 2026