Mizuno Franchise GXF90B5 12.5" Baseball First Base Mitt (2026)

Parent SKU:313240

$159.99

Eligible for free shipping on Canadian orders $150+.

Hand: Lthrow Lthrow Rthrow

You should be able to size this product without leaving SportsZone. Start with the physical measurement below, use the rule of thumb as a quick check, then match it to the chart. Manufacturer-specific numbers are used where reliable; SportsZone starting charts are clearly labelled where brands vary.

Rule of thumbPosition matters as much as age.Infielders generally go smaller for transfers; outfielders go longer for reach. Youth players still need to close the glove comfortably.

Sizes/options sold on this product

01

Choose by position and hand size

Glove length is driven by position and how easily the player can close the glove.

Baseball & softball fielding glove chart

Player	Position	Starting glove
T-Ball, ages 3–6	All	8.5–10"
Youth, ages 7–12	Infield	10.25–11.5"
Youth, ages 7–12	Outfield	11.5–12.25"
Youth, ages 7–12	1st base	11.5–12"
Adult, 12+	Infield	11.25–12"
Adult, 12+	Outfield	12–12.75"
Adult, 12+	1st base	12–13"
Youth fastpitch	Infield / Outfield	10.5–11 / 11–11.5"
Adult fastpitch	Infield / Outfield	11.5–12 / 12–13"
Adult slowpitch	Infield / Outfield	12–13 / 12.5–14"

Availability:In stock · usually ships within 48 business hours

02 OPTIONAL UPGRADE

Want it game ready?

Add MittMaster Break-In We use our MittMaster to work and shape your glove before shipping or pickup. +$50.00 Add Added

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THE GEAR BREAKDOWN

Know Before You Buy

The useful product info, organized to help you make a faster decision.

01 Overview

Overview

The 2026 Mizuno Franchise GXF90B5 12.5-inch Baseball First Base Mitt combines a comfortable hand-based pattern with durable full-grain leather for dependable performance around the bag. Its 12.5-inch first-base shape creates a secure pocket for scoops, stretches and difficult throws.

The ParaShock+ palm pad increases impact absorption to reduce sting, while Center Pocket design positions the pocket naturally under the web. HiLo lacing and a moisture-wicking MZO lining support durability and comfort through regular play.

02 Key Features

Key Features

01 12.5-Inch First Base Pattern Provides a secure receiving pocket for scoops and throws around the bag.
02 Full-Grain Leather Durable shell construction provides a soft, game-ready feel.
03 Center Pocket Design Positions the pocket naturally under the web for controlled catching.
04 ParaShock+ Palm Pad Increases impact absorption to help reduce sting.
05 HiLo Lacing Alternating lace pattern supports pocket durability and structure.
06 MZO Lining Moisture-wicking lining helps manage sweat inside the mitt.
07 Hand-Based Pattern Comfortable shape supports a natural fit and player-controlled break-in.

03 Specs

Specs

Brand: Mizuno
Series: Franchise Baseball
Model: GXF90B5
Style: 313240
Model Year: 2026
Product Type: Baseball First Base Mitt
Position: First Base
Size: 12.5 in
Leather: Full-Grain Leather
Padding: ParaShock+ Palm Pad
Lining: MZO Moisture-Wicking
Live Hand Options: LTHROW / RTHROW
Store SKU: 313240
UPCs: 889961684647 / 889961684654

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Mizuno Franchise GXF90B5 12.5" Baseball First Base Mitt (2026)

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Baseball & softball fielding glove chart

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Know Before You Buy

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