GMP-400* Mizuno Pro 11.5" Baseball Glove

11.5 in
Web not stated
Steerhide
Break-in stiff
Closing hard

GMP-400* Mizuno Pro 11.5" Baseball Glove, infield gloves: photo from Mizuno — Photo: Mizuno

Facts as the maker states them, read 20 Oct 2026

The GMP-400* is a limited-edition 11.5-inch Mizuno Pro glove in right-hand throw that the page says is handcrafted by a Mizuno master craftsman and uses the same pattern cut as its predecessor. It is made of Deguchi steerhide leather debossed with tiger striping and carries a 3D silicone logo.

Type	Infield glove
Size	11.5 in What this means Measured from the heel to the top of the index finger. Infielders use smaller gloves (10.25 to 11.75 in) for quick transfers; outfielders larger (12 to 12.75 in); first base and catcher's mitts are measured differently. Tip: Bigger is not better for a young infielder. A glove they can close beats a glove that looks like a pro's.
Leather	Deguchi steerhide leather What this means Heavy, durable adult-cattle leather. Stiff at first, lasts for years. Most pro lines use it.
Hand	Right-hand throw
Also on the page	Limited Edition: Handcrafted by a Mizuno Master Craftsman 3D Silicone Logo Deguchi steerhide leather that is debossed with "Tiger-Striping"
Maker SKU	313406RG401150
The maker says	Handcrafted by a Mizuno Master Craftsman. The same pattern cut as its predecessor that everyone loved, with new highlights and accents for a retro-futuristic look. The famous Deguchi steerhide leather debossed with Tiger-Striping.
Source	usa.mizuno.com, product page, read 20 Oct 2026

Pat's Grade one person's opinion, with the reason

Not yet graded

Patrick has not graded this line yet. A line not handled yet says Not yet graded, never a low grade.

We have no dealer or affiliate relationship with Mizuno. If that changes it will say so here, and the grade will not move. How we grade

Evidence public reviews and break reports, with links

We have not looked for public reviews of Mizuno yet.

What "buyer reports" means

Public review counts and themes we found for this maker, with links, plus break reports sent in by site users. Where we found nothing public we say so.

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$450.00maker’s price, read 20 Oct 2026

See it on Mizuno's siteNo buy route yet: this link goes to the maker, and we earn nothing from it.

Fit profile

Stated comes off the maker's page; derived is worked out from what the maker states: its words, its leather, its numbers; graded is Patrick's call; unknown means the class is not known yet.

LeatherstatedSteerhide
Break-inderivedStiffDerived from leather type (steerhide / pro-grade wording).
What this means
Pro-grade leather such as Japanese kip or steerhide. Can take weeks to months to break in and a young player may not be able to close it at all at first. Lasts for years once broken in.
Tip: Do not buy a stiff pro glove for a player under 12 unless you are ready to break it in for them.
Closing effortderivedHardDerived: stiff build.
What this means
How hard a young hand has to squeeze to close the glove on a ball. Easy means a soft build and a smaller pattern; hard means stiff leather or a big mitt.
Tip: If your player drops balls that hit the pocket, closing effort is usually the reason, not the hands.
PocketunknownNot known
BackunknownNot known
Hand openingunknownNot known

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Compare with: Rawlings 2022 Sandlot Series^™ 11.5-inch Infield Glove, SSK Baseball SSK Z5 Craftsman 11.5" Infield Baseball Glove Z5-1150BLKCMLEBL1, SSK Baseball SSK Z5 Craftsman 11.5" Infield Baseball Glove Z5-1150BLKCMLPNK1. Same kind of glove, same size.