Basketball questions answered
Updated June 2026Independently researchedNo paid placement.
The best basketball for you depends on your age, playing surface, and budget. Official size is 29.5 inches for men and 28.5 inches for women, but youth sizes go smaller. Our guide answers the most common questions so you can choose a ball that fits your game and lasts.
What size basketball should I buy?
Basketball size is determined by the player’s age and gender. Official men’s basketballs (size 7) have a circumference of 29.5 inches and are recommended for ages 12 and up. Official women’s basketballs (size 6) are 28.5 inches and suited for ages 12 and up as well, but many women prefer the slightly smaller feel. For kids ages 9 to 11, size 5 (27.5 inches) is a good fit, while ages 5 to 8 often use size 4 (25.5 inches) or even size 3 for very young children. Using the correct size helps develop proper shooting form and dribbling control. If you’re buying for a middle-school or high-school team, check league requirements first. For casual home use, sizing up or down one size is fine for younger players. Many manufacturers offer combo packs with a pump and needle, which is handy if you’re buying your first ball.
Indoor vs outdoor basketballs: what's the difference?
Indoor basketballs use a full-grain leather cover that provides excellent grip and feel on wood floors. They require a break-in period, the leather absorbs oils and becomes softer over time. These balls are not durable on concrete or asphalt; the rough surface wears down the leather quickly and can ruin the ball in a few weeks. Outdoor basketballs have a rubber or composite cover designed to withstand abrasion from pavement and blacktop. They require no break-in and bounce reliably on hard surfaces. Indoor/outdoor composite balls are a versatile middle ground: they offer decent grip on both surfaces but won’t perform like a true indoor leather ball on a court. If you play mostly outdoors, choose a rubber or dense composite ball. If you play only indoors, invest in a leather ball for the best feel.
How do I maintain and inflate my basketball?
Keeping your basketball at the right pressure is crucial for consistent bounce and durability. The recommended inflation pressure is usually between 7 and 9 pounds per square inch (psi). You can check pressure with a small gauge built into many pumps. A properly inflated ball should bounce back to roughly waist height when dropped from shoulder height on a hard surface. Use a pump with a needle lubricated with a drop of oil or water to avoid damaging the valve. Never overinflate, that can deform the ball and cause seams to separate. After playing outdoors, wipe the ball clean with a damp cloth to remove dirt and grit. Store it in a cool, dry place away from direct sunlight and extreme temperatures, which can dry out the cover material.
What is the best material for a basketball?
The best material depends on where you play. For indoor courts, genuine leather is top-tier: it offers superior grip and feel, but it’s pricey and requires a break-in. For outdoor use, rubber is the most durable and affordable, though it can feel a bit stiff. Composite leather, a synthetic material, is a popular middle ground; it mimics leather’s feel without the long break-in and is often labeled indoor/outdoor. High-end composite balls with a microfiber or PU surface offer excellent grip and can be used indoors, but they wear faster on asphalt. For most casual players who bounce between driveways and gyms, a quality composite indoor/outdoor ball is the most practical choice.
Should I buy an expensive basketball or a budget-friendly one?
It really comes down to how often and where you play. A budget-friendly ball, typically under a few tens of dollars, can be fine for occasional driveway games and kids. These balls often have a thin rubber cover that hardens over time and a valve that may leak. Mid-range options (roughly a few tens to around a hundred dollars) from reputable brands offer a noticeable upgrade in grip, consistency, and durability. They use better composite covers and butyl bladders that hold air longer. For serious players who practice regularly or play in leagues, investing in a premium ball in the upper price range, whether leather for indoor or high-grade composite for outdoor, is worthwhile. The feel and control are significantly better, and with proper care, a good ball can last several seasons. A common recommendation is to start with a mid-range composite indoor/outdoor ball and only step up to a leather ball if you consistently play indoors.
Frequently asked questions
What size basketball does the NBA use?
The NBA uses a size 7 ball with a circumference of 29.5 inches and a weight of 22 ounces. It is made of full-grain leather and requires a break-in period.
Can you use an indoor basketball outside?
You can, but it will wear out very quickly. The leather or high-end composite cover will scuff, peel, and lose its grip after just a few uses on concrete or asphalt. It’s better to keep indoor balls for the court.
How often should I replace my basketball?
It depends on usage. A high-quality indoor ball used heavily may last one to two seasons before the leather wears thin. An outdoor ball can last a year or two on asphalt. If you notice the ball losing air quickly, the cover feels slick or bald, or the bounce becomes inconsistent, it’s time for a replacement.
What basketball is best for young children (ages 5-8)?
For that age group, a size 4 ball (25.5 inches) is recommended. Look for a soft rubber or composite cover, it offers good grip and won’t hurt small hands. Some kid-size balls come with a playful pattern or a bright color to keep them engaged.
Do I need a basketball with a deep channel or a shallow channel?
Channel depth is a matter of personal preference. Deep channels (like those on many Wilson and Spalding balls) allow your fingers to sit more securely, which can improve grip for shooters and ball handlers. Shallow channels give a smoother feel and are often preferred by players who like a cleaner release. Try both types if possible before buying.