Choosing the right tennis racket can feel overwhelming—especially with all the technical terms and numbers involved. But understanding tennis racket specifications isn't just for the pros. At Mantis, we believe every player deserves to feel confident about the gear they use.
Let’s break down the key tennis racket specifications and what they really mean for your game.
Head Size
Measured in square inches (sq. in.)
This refers to the total surface area of the racket’s head—basically the part with the strings. Larger head sizes offer more forgiveness and power thanks to the trampoline effect, while smaller heads provide more control for players who can consistently hit the sweet spot.
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Over 100 sq. in. – Power-focused, more forgiving
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96–100 sq. in. – Balanced, versatile
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Below 96 sq. in. – Precision and control
Mantis Tennis Racket Specifications Tip:
New to the game or looking for help generating power? Go bigger. More experienced with a long, fast swing? A smaller head may give you the control you’re after.
Mantis racket head sizes:
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Pro Series = 98 sq in
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PS Series = 100 sq in
Weight
Measured in grams (g) or ounces (oz)
The total mass of your racket plays a big role in how it feels and performs.
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Light (<285g / 10oz) – Easier to swing, less tiring
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Medium (~300g / 10.6oz) – A great all-rounder
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Heavy (>310g / 11oz) – More stable, more power potential
Heavier rackets absorb more of the ball's impact and are often favored by advanced players who can handle the added weight. Lighter rackets are great for quick reaction times and for reducing fatigue during long matches.
Mantis Tennis Racket Specifications Tip:
Heavier rackets deliver more punch but require good technique. Beginners often prefer lighter options for better maneuverability.
Mantis racket weights:
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Pro 310 = 310g
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Pro 295 = 295g
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PS 300 = 300g
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PS 285 = 285g
String Pattern
Shown as something like 16x19 or 18x20
This describes how the strings are arranged, with the first number referring to the number of vertical (main) strings and the second to the horizontal (cross) strings.
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16x19 – Open pattern for more spin and power
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16x18 – Even more open for aggressive topspin
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18x20 – Tighter for precision and control
An open string pattern allows the strings to move more freely, which helps create spin. Tighter patterns offer a more consistent stringbed and longer string life.
Mantis Tennis Racket Specifications Tip:
Unless you have a strong preference, start with 16x19—it offers a great balance of control, feel, and spin.
Mantis racket string patterns:
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All Mantis tennis rackets have a 16x19 string pattern
Balance Point
Measured in millimeters (mm)
Balance determines where the weight is distributed—toward the head, the handle, or evenly. This affects swing speed and overall feel.
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Head-Heavy (>345mm) – More power, great for baseline play
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Head-Light (<345mm) – Better control and faster reaction at the net
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Even Balance (~345mm) – A good mix of both
Head-heavy rackets can help generate more momentum on groundstrokes, while head-light rackets offer quicker handling at the net—ideal for volleyers and doubles players.
Mantis Tennis Racket Specifications Tip:
Looking for more stability on groundstrokes? Go head-heavy. Want precision and quick handling? Head-light could be your best bet.
Mantis rackets balance points:
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Both our models and all weights: 325mm
Beam Width
Measured in mm (e.g. 23/26/23mm)
This is the thickness of the frame at different points. Beam width directly affects power and flexibility.
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<22mm – Thin beam, control-oriented
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22–24mm – Balanced performance
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>24mm – Thick beam, power-friendly
Straight beam frames (like the Pro Series) maintain the same thickness throughout, offering uniform flex and a more classic feel. Tapered beams (like the PS Series) add rigidity where needed for more power and stability.
Mantis Tennis Racket Specifications Tip:
Beginners and power-seekers: go wider. Control players: look for thinner beams for better feedback.
Mantis racket beam widths:
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Pro Series: 21mm
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PS Series: 23.5mm / 25mm / 22.5mm
Length
Standard: 27 inches (686mm)
Most adult rackets are 27 inches long, but extended-length rackets (up to 28 inches) can offer additional reach and leverage.
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Standard (27") – Balanced and maneuverable
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Extended (27.5–28") – More reach, extra power on serve
While the benefits of longer rackets are real, they can also make the frame harder to handle—especially at the net.
Mantis Tennis Racket Specifications Tip:
Stick with standard unless you’re looking for extra leverage on serve or groundstrokes.
All Mantis rackets are 27 inches in length (The United States Tennis Association (USTA) offers further guidance)
Recommended String Tension
Measured in pounds (lbs)
Each racket has a recommended range. The tighter the strings, the less trampoline effect—and the more precise your shots.
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Low tension (below 50 lbs) – More power, softer feel
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High tension (above 55 lbs) – More control, crisper response
Lower tension is often preferred by beginners for comfort and power. Advanced players who generate their own pace may opt for higher tension for pinpoint accuracy.
Mantis Tennis Racket Specifications Tip:
Experiment within the range to find what feels best for your style of play.
All Mantis tennis rackets have a recommended string tension of 44 – 60 lbs
Bonus: Grip Size Matters Too
Measured in inches or European sizes (e.g. L2, L3)
Grip size affects your ability to control the racket and avoid injury. Too small and you’ll over-grip; too large and your wrist won’t move freely.
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Common sizes:
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L2 (4 1/4") – Small
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L3 (4 3/8") – Medium
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L4 (4 1/2") – Large
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Mantis Tip:
Use the “index finger” test: if there’s just enough room between your fingers and palm when gripping the handle, it’s a good fit. If you’re in between sizes, go smaller—you can always build it up with an overgrip.
The Bottom Line
There are no perfect tennis racket specifications — only the perfect match for you. Each feature interacts with the others, and how they feel in your hands is what truly counts. At Mantis, we design rackets that blend precision, innovation, and feel, so players of all levels can find their edge.
Whether you’re a newcomer learning the ropes or a seasoned competitor dialing in your performance, understanding tennis racket specifications gives you the power to choose smarter—and play better.
Ready to find your fit?
Explore our racket range to find your next step to improving your game as a committed amateur.
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