











GRIND Premium Indoor Game Basketball
GRIND's premium indoor basketball game-ball represents performance engineered for serious players only.
Crafted with Japanese-engineered microfiber leather, the ball delivers elite grip, a butter-smooth feel, and unmatched durability through every possession.
The material gives you a soft touch, consistent bounce, and high-end moisture
management trusted by top-tier indoor players.
Designed at GRIND HQ in Houston, Texas, the Locked-In Game Ball mirrors the standards of pro-level competition balls — and introduces a distinctive gold outline that stands out on the court elevating performance.
Built for players who demand consistency and control during intense gameplay.
Pairs well with

GRIND Premium Indoor Game Basketball
Product details
Which size should you buy?
The first step in choosing a basketball is to determine what size is ideal for your level of play.
SIZE 7
Size 7 basketballs measure 29.5” in circumference and have a standard weight of 22 oz. Size 7 basketballs are the standard ball size for men’s professional basketball associations, such as the NBA, as well as men’s college, high school, and travel basketball leagues.
SIZE 6
Size 6 basketballs measure 28.5” and have a standard weight of 20 oz. Size 6 balls are the official ball size for most women’s professional basketball associations, including the WNBA and International Basketball Federation (FIBA) 3x3, in addition to women’s college and high school basketball leagues, and in youth leagues for players 12 and up.
What Makes This a Premium Indoor Basketball Game Ball
A basketball's material isn't just a spec. It directly affects how you catch, shoot, and handle the ball under pressure.
Microfiber leather grip. The surface channels moisture and maintains traction through full-speed play. You get reliable grip on your release whether you're fresh in warmups or deep into a training session.
Improved control when shooting. A softer, more consistent surface means the ball sits in your hand the same way every time you catch it. That consistency feeds into your mechanics, not against them.
Predictable feel across sessions. With a rubber or composite ball, the feel changes as the ball wears. Microfiber leather holds its surface quality longer, so session 100 feels close to session one.
Translate that into outcomes:
- More consistent shooting mechanics because your grip doesn't change rep to rep
- Better ball handling under pressure because the surface responds predictably
- Cleaner release because the ball sits correctly in your hand at the point of departure
- Higher grip level from microfiber or genuine leather construction
- Softer feel that improves shooting touch and ball control
- Designed for hardwood and sport court surfaces
- Better performance for skill development and competitive play
- The correct choice for any serious training environment
- More durable against concrete and asphalt surfaces
- Harder rubber construction handles rough terrain
- Lower grip and control compared to indoor materials
- Prioritizes lifespan over feel
- Better grip improves your shooting release. When the ball sits cleanly in your hand at the point of release, your fingers can do their job. Inconsistent grip means inconsistent spin, which means inconsistent flight.
- Softer touch increases shooting consistency. A ball that catches cleanly and feels the same in your hands every time removes one variable from your mechanics. Fewer variables mean more repeatable results.
- Predictable bounce improves training quality. During passing drills, off-the-dribble shooting, and machine-based training, a consistent bounce means you're training your actual skills, not compensating for ball behavior.
- Moisture control maintains performance. Microfiber leather channels sweat and moisture rather than absorbing it. As the session gets physical, your grip holds.
- GRIND Basketball Shooting Machine for automated ball return and high-rep training
- Locked In Game Ball for consistent feel and grip through every session
- Warranty coverage to protect your machine investment
- Browse all training equipment
Who This Indoor Basketball Game Ball Is For
Serious players focused on performance. If your game is built around reps and refinement, the ball you train with matters. A premium surface produces cleaner feedback on every shot.
Guards working on shooting and ball control. Perimeter players feel ball quality more acutely than anyone. Grip and feel at the point of release directly affect shooting consistency.
Athletes training with shooting machines. High-volume training sessions put serious demands on a ball. The Locked In is built to hold up through that kind of repetition without losing its surface feel. It pairs directly with the GRIND Basketball Shooting Machine.
Teams and training facilities. Programs that run structured sessions need a ball that performs the same way across dozens of players and thousands of reps. Consistency is the point.
Indoor-only courts. If your training happens on hardwood or sport court surfaces, a microfiber leather ball is the correct choice. It's built for that surface, and it performs accordingly.
Indoor Basketball Game Ball vs. Outdoor Basketball
This is one of the most common questions buyers face, and the answer is straightforward.
Indoor basketball game ball:
Outdoor basketball:
If you're training on an indoor surface, an outdoor ball is actively working against your development. The harder surface and reduced grip produce feedback that doesn't transfer cleanly to game conditions.
The Locked In is built for indoor use. That's where it performs, and that's where serious training happens.
How This Indoor Basketball Game Ball Improves Your Game
Every feature on this ball connects to a specific performance outcome.
The outcome: more quality reps, better feedback on every shot, and training that actually transfers to games.
Ideal Basketball for Shooting Machines
If you're training with a GRIND Basketball Shooting Machine, the ball you use matters more than most people think.
Consistent bounce for repetition training. A machine-based workout depends on predictable ball behavior. If the ball's surface has degraded or the bounce is inconsistent, every rep introduces a variable you didn't intend.
Durable for high-volume use. Shooting machine sessions put a lot of reps on a ball. The Locked In is built to handle that volume without the surface breaking down prematurely.
Designed for the training loop. Catch, shoot, repeat. The microfiber surface holds up through extended sessions and maintains the feel that makes machine-based training effective.
For players building their shooting game through high-rep solo training, the Locked In and the GRIND Machine are a natural pairing. View the shooting machine.
Product Specifications
|
Spec |
Details |
|
Material |
Microfiber leather |
|
Size 7 |
29.5" (men's standard) |
|
Size 6 |
28.5" (women's / youth standard) |
|
Weight |
Official game weight |
|
Recommended use |
Indoor only |
|
Grip level |
High |
|
Skill level |
Intermediate to advanced |
|
Surface compatibility |
Hardwood, sport court, indoor surfaces |
How This Compares to Other Indoor Basketball Game Balls
|
GRIND Locked In |
Wilson Evolution |
Spalding TF-1000 |
|
|
Grip |
High, microfiber leather |
High, microfiber leather |
High, microfiber composite |
|
Feel |
Soft, consistent |
Soft, well-known |
Firm, structured |
|
Durability |
Built for high-rep training |
Strong indoor durability |
Strong indoor durability |
|
Machine compatibility |
Designed for it |
Compatible |
Compatible |
|
Price positioning |
Competitive |
Mid to premium |
Mid to premium |
|
Brand fit |
Training-first |
Team/school-focused |
Game/competition-focused |
The Locked In is built specifically around the training context. If you're logging serious reps, especially with a shooting machine, it's designed to hold up where other balls start to fade.
Why Players Choose This Basketball
Players who train seriously tend to have clear opinions about what they put in their hands.
For shooting workouts. The consistent feel and reliable grip matter most in high-rep sessions. When you're taking hundreds of shots in a session, you want a ball that feels the same on shot 1 and shot 400.
For team practices. Programs want a ball that performs consistently across different players and different roles. A microfiber leather surface holds up through contact from guards, forwards, and post players without losing its characteristics.
For daily use. Players who train every day need a ball that doesn't break down by week three. The Locked In is built around that kind of sustained use.
How to Choose the Right Indoor Basketball for Your Game
Skill level. The Locked In is best suited for intermediate to advanced players who can feel and use the performance differences in a microfiber leather surface. Younger beginners may not notice the difference as acutely.
Court type. Microfiber leather is built for hardwood and sport court. If you're playing on any outdoor surface, this is not the right ball. A rubber outdoor ball will last significantly longer on rough surfaces.
Frequency of use. High-frequency trainers get the most value here. The ball is built for volume, and the surface quality justifies the investment for players putting in real reps.
Training goals. Players working on shooting mechanics, ball handling, or machine-based training all benefit from the consistency this surface provides. The ball becomes one fewer variable in the training loop.
How to Take Care of Your Indoor Basketball
A quality indoor basketball lasts a long time when it's treated right. A few habits extend that lifespan significantly.
Keep it off outdoor surfaces. Concrete and asphalt destroy microfiber leather fast. Even one outdoor session can noticeably degrade the surface and reduce grip.
Store it indoors at room temperature. Extreme heat or cold affects air pressure and surface integrity. A cool, dry indoor space is the correct storage environment.
Clean it regularly. Wipe the ball down with a slightly damp cloth after sessions. Dirt and oils from skin accumulate on the surface and reduce grip over time. Don't use harsh cleaners or submerge it in water.
Rotate usage if you have multiple balls. If you're training daily with a shooting machine, rotating between two balls extends the lifespan of both. High-volume training is demanding on any ball's surface.
Check the pressure regularly. An over- or under-inflated ball behaves differently and wears unevenly. Keep it at the recommended PSI for consistent performance.
Pairs Well With the GRIND Shooting Machine
A quality training setup starts with the right ball. The Locked In is built to run through the GRIND Basketball Shooting Machine session after session without losing the surface feel that makes repetition training effective.
Bundle your setup:
Questions about the ball, sizing, or compatibility with your setup? Visit the FAQ page or reach out through Support.
Order Now—Put a quality ball in your hands.
Shop the Shooting Machine—Build the full training setup.
Browse All Equipment—See everything GRIND makes.
GRIND's premium indoor basketball game-ball represents performance engineered for serious players only.
Crafted with Japanese-engineered microfiber leather, the ball delivers elite grip, a butter-smooth feel, and unmatched durability through every possession.
The material gives you a soft touch, consistent bounce, and high-end moisture management trusted by top-tier indoor players.
Designed at GRIND HQ in Houston, Texas, the Locked-In Game Ball mirrors the standards of pro-level competition balls — and introduces a distinctive gold outline that stands out on the court elevating performance.
Built for players who demand consistency and control during intense gameplay.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
What is the best indoor basketball game ball for training and competitive play?
The best indoor basketball game ball combines strong grip, consistent feel, and durability through high-rep use. Microfiber leather is the standard material for serious training because it holds its surface quality longer than composite alternatives. The Locked In is built around exactly those requirements.
Is this ball good for shooting practice?
Yes. The consistent surface and reliable grip make it well-suited for repetition-based shooting workouts. When the ball feels the same on every catch, your mechanics develop faster. It's specifically designed to hold up through the kind of volume that shooting practice demands.
Can I use this basketball outdoors?
Technically yes, but it will significantly reduce the ball's lifespan. Outdoor surfaces like concrete and asphalt are abrasive enough to degrade microfiber leather quickly. For outdoor use, a rubber ball built for those conditions is the correct choice.
What size basketball should I choose?
Size 7 (29.5") is the standard for men's play and is the most common choice for adult male players. Size 6 (28.5") is the standard for women's play and is also commonly used by youth players in certain age groups. When in doubt, Size 7 for adult men, Size 6 for everyone else.
How long does an indoor basketball last?
With proper care, a microfiber leather ball used primarily indoors can last multiple years of regular training. The key factors are surface care, storage conditions, and keeping it off outdoor surfaces. High-volume machine training is the most demanding use case, and rotating between two balls helps extend individual lifespan.
Is microfiber leather better than rubber?
For indoor training and performance, yes. Microfiber leather provides better grip, softer feel, and more consistent surface quality than rubber. Rubber is more durable on outdoor surfaces, but indoors it produces noticeably less control. If you're training seriously on an indoor surface, microfiber leather is the right call.
Is this ball used in official games?
The Locked In uses official sizing (Size 7 at 29.5" and Size 6 at 28.5"), which meets standard game specifications. It's built for competitive-level play and training at that same standard.
Does this ball work with shooting machines?
Yes, and it's one of the best choices for that use case. The consistent surface and predictable bounce are exactly what high-rep machine training requires. It pairs directly with the GRIND Basketball Shooting Machine and holds up through extended sessions.
GRIND Equipment














GRIND Machine
Ships early-July 2026
🔥 Up to 1,000 reps per hour
🦾 9 spot passing
🏀 Use up to 2 basketballs
🎯 Rebounds makes + misses
📈 12-foot tall net perfects shooting arc
🧳 Portable, lightweight, and easy to use









