C310 Catcher's Mitt

31 in
Web Flat two-piece
Break-in game-ready
Closing easy

Facts as the maker states them, read 14 Oct 2026

The C310 Catcher's Mitt has a flat two-piece web with open-back styling and is listed at a 31-inch circumference. The page describes its leather as game-ready and durable.

Type	Catcher's mitt
Size	31 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.
Web	Flat two-piece
Leather	Game-ready durable leather
Back	Open
Sizes	31" circumference
Also on the page	Game-ready durable leather Flat two-piece web, open-back styling 31" circumference
Maker SKU	DCM-C310
The maker says	"Game-ready durable leather".
Source	diamond-sports.com, product page, read 14 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 Diamond. 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

Public reviews of Diamond are thin. They are gathered by maker; each source says which product or line it covers.

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.

JustBallGlovesRetailer ratings: Baseball Series C325 catcher's mitt5.0 of 5, 1 reviewBuyers like: Single brief positive review with no detail
JustBallGlovesRetailer ratings: Fast Hands training glove5.0 of 5, 1 reviewBuyers like: Parent of an 11-year-old travel player says hand speed and ball handling improved with regular use
JustBallGlovesRetailer ratings: Fastpitch Series F315 youth catcher's mitt (softball)0 reviews
Baseball MonkeyRetailer ratings: Diamond training balls (DMBP, TPM-9, 9 in foam)0 reviews
WalmartRetailer ratings: 9 in foam practice baseballs, 6-pack0 reviews

Also checked, with no ratings or themes to report: JustBallGloves.

Break reports from players on this site

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No price on the maker's page

How we read this price

no price on page; sold through dealers

See it on Diamond'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.

LeatherunknownNot known
Break-instatedGame-readyStated: page uses break-in or softness wording.
What this means
Soft out of the box and usable the first day. Made with softer leather that will not last as long as a stiff pro glove, which is fine for a growing player.
Tip: For most players under 12 this is the right answer.
Closing effortderivedEasyDerived: soft build and youth or small pattern.
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
BackstatedOpen
Hand openingderivedSmallDerived: youth line.

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