10 Best Small Exercise Ball For Between Knees of 2025

Tested and Reviewed: Top 10 Small Exercise Ball For Between Knees deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Trideer

Trideer Exercise Balls Physical Therapy, 9 Inch Pilates Ball Between Knees for Physical Therapy, Mini Exercise Ball - Yoga Ball, Small Workout Balls for Core Strength and Back Support

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Editor's bottom line:

“This small exercise ball for between knees is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Boosts Joint & Muscle Rehab: This Pilates ball, as ideal pieces of physical therapy equipment, works wonders in joint and muscle rehabilitation exercises (esp. back rehab!). It speeds up the recovery of a wide variety of body parts including the ankle, knee & hip joints and back & shoulder muscles, by improving posture, balance, and core stability, and in a safer way.
Unlimited Variety of Uses: These swiss balls for exercise are an extremely versatile tool to help strengthen your whole body. They add an extra level of stability in yoga, pilates, barre, fitness training and rehab or recovery programs so as to enhance your practices. Also works great for releasing deep layers of muscles and fascia pre- and post-workout at home, in the gym, or at the physical therapy offices and rehabilitation centers.
Easy to Inflate & Store: The 9 inch mini exercise ball inflates in seconds using the included tube. Make sure you quickly plug it tight using the included plug after inflation to avoid any air leaking. The small size of the pilates ball makes it easy to store at home or take with you to classes, therapy sessions, or when traveling.
Anti-Burst & Anti-Slip: These 9'' physioballs are made from long-lasting PVC free of phthalates. The physical therapy ball does not contain heavy metals (Pb, Cd, Hg, etc.) or 10 types of harmful heavy metal salts. The textured anti-slip surface delivers a firm and comfortable grip for your peace of mind when working out.
Avoid placing the Pilates ball on wooden furniture for long periods to prevent damage.

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Picked by 397 people today

9.5

CIZEBO

CIZEBO Small Exercise Ball for Between Knees, 6 inch Pilates Ball with Pump, Mini Yoga Core Ball Physical Therapy, Blue

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Main Highlights

Small exercise ball, easy to inflate. With included needle air pump, stay inflated
Pilates ball small 6 inch, easy to grip. Fits for exercise like barre, fitness, workouts, anti burst
Pysical therapy ball, PT exercise.For between knees, lower back, hip physical therapy
Core ball for class & home exercise, quick to inflate. No need to mouth blowing, No need to frantically try getting a plug in the hole as it leaks air
Keep the ball away from wooden surface, when not use. Especially in hot summer. We kindly bring to your attention that this principle applies to most exercise balls
Number of items in the box: 1pcs small exercise ball, 1pcs pump

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9.5

ProBody Pilates

ProBody Pilates Small Exercise Ball - 9 Inch Workout Ball for Stability, Barre, Yoga, Core & Physical Therapy, Home Gym & Office Use (Blue)

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Main Highlights

VERSATILE: Small yoga ball is intended for core strength, posture, and back rehabilitation. All-around must-have small Pilates ball for exercise and stability, at the gym, office or home.
SAFE MATERIALS: Carefully chosen for these Pilates balls for exercise and are free from harmful chemicals. The small workout ball is anti-burst and offers the perfect grip for barre or yoga.
RECOMMENDED BY TRAINERS AND PHYSICAL THERAPISTS: The inflatable yoga ball small aids in increased balance, core fitness and flexibility, as well as recovery with hip, knee or sciatica issues.
INCLUDED with our soft Pilates ball are exercises and an extra inflation straw. The 9 inch Pilates ball inflates in seconds, and bringing the small therapy ball on the run is easy.
IMPROVE CORE STRENGTH with a workout ball small. The pt ball for therapy between legs helps you improve posture, balance, tone and strengthen muscles. Must-have Pilate ball for at home or the gym.
PRECAUTIONS: Consult physician before starting an exercise program with this therapeutic exercise ball. Leave off of finished wood surfaces during when not using core ball for exercise.

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9.2

kisnbld

kisnbld Small Exercise Ball, 9 Inch Mini Pilates Ball, Anti Burst and Slip Resistant Mini Yoga Ball for Stability, Fitness, Physical Therapy, Stretching & Core Strength Workout at Home Gym & Office

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Main Highlights

- & - - Made of durable & non-toxic PVC material, the small pilates ball will not burst or lose its shape when used on a hard surface. And the surface of each ball is coated in a non-slip glaze to ensure you have a proper and safe grip, so never worry about it when working out.
- The mini yoga ball is perfect for yoga, pilates, barre, physical therapy or at home workouts that focus on building core strength and flexibility, posture, stability, balance, toning, sculpting muscles and back rehabilitation.
- The exercise ball for pilates is quick to inflate or deflate for easy use, just in seconds by using the straw provided to pump with air or remove the plug to deflate after use.
- The package includes everything you need: 1*small yoga ball, 2*Straws, 2*Air Plugs (one pre-installed) and 1*Plug Puller for quick inflation and time saving. Available in 5 popular colors and different sets to meet your special needs.
- We are committed to meeting the satisfaction of every customer and serving you all wholeheartedly! If you are upset about our product for whatever reason, please let us know, and we will gladly provide a solution for you. NOTE: Please keep the ball away from woodwork, wooden furniture or painted walls because the exercise ball is unfriendly to the wood or painting.

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9.0

Goonidy

Soft Pilates Ball 9 Inch, Ideal Small Exercise Ball Between Knee Squeeze for Physical Therapy Yoga Core Medicine Abs Pt Bouncy, Mini Rubber Fitball Barre Workout Equipment for Women Men Kid Toddler

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Main Highlights

ALL ROUND - The mini exercise ball can effectively stimulate your abdominal and inner thighs muscles, increase your flexiblity, strength and endurance! Can add instability and resistance to do a variety of exercises, and very suitable for relaxation of the body. Most importantly, it makes your exercise full of freshness and fun.
PROFESSIONAL DESIGN - Made of soft, flexible, durable and skin-friendly PVC, can remain elastic and squishy even fully inflated. Special film attached to the surface, make Goonidy Pilates Ball smooth but non-slip, and can withstand 700lbs, not burst even if pierced by a sharp object.
SOFT & SKIN FRIENDLY - Goonidy swiss ball is very soft, bringing you a unique experience of comfort and relaxation. Safely certified by SGS, no smell and harmless, skin-friendly, can be used by children and pregnant women.
EASY TO USE - The Balance Ball can be easily infalted with included tube and breath, pump not required. And a folded size as iphone 16 mini makes the ball convenient to carry and store.
MULTIPLE USAGE - Soft and skin-friendly materials, plus can withstand 700lbs, make Goonidy Small Exercise Ball suitable for yoga, pilates, ballet, barre, physical therapy, core strength, balance, flexibility, toning and sculpting, fitnness, pregnancy birthing, bouncing, beach and playground play and most rigorous training and workout.

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8.8

KEEP

KEEP Pilates Ball Small- Balance Yoga Balls for Working Out, Fitness Ball for Core Strength and Physical Therapy, 25cm,Pale Green

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Main Highlights

Anti-Bust & Worry-Free -- The KEEP Fitness Ball features anti-burst technology with a honeycomb microporous foaming structure. It has passed strict explosion-proof test, with an ultra-high anti-burst rating of 1300 lbs. In the event of puncture by sharp objects, the ball deflates slowly rather than bursting, ensuring your safety is always protected
PROFESSIONAL 9.8" (25cm) VERSATILE SIZE Engineered slightly larger than standard 9" balls to provide a wider support base and superior stability for spinal alignment. This "Pro-Size" offers deeper stretching and better surface contact for physical therapy. PRO-TIP: For the best grip and comfort, inflate to 70-80% to create a "squishy" feel that contours perfectly to your body.
Non-Slip & Stability -- This exercise yoga ball is made of matte material which can effectively increase friction,and designed with a thickened ball wall, significantly enhances durability and resilience
Versatile Use -- Additionally, this versatile yoga ball can double as a chair, making it perfect for home or office use. By replacing your traditional chair with this yoga ball, you can easily correct your posture and develop a more attractive physique
Planet-friendly & Non-Toxic -- Crafted from premium eco-friendly PVC material, this birth ball is free from harmful additives, allowing you to breathe easy and use it with confidence, pregnant women also can use it with complete confidence

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8.6

jjshund

jjshund Pilates Ball, 9,8 Inch Small Exercise Mini Yoga Soft Workout Ball for Home Gym Yoga, Pilates, Core Training, Workout, Balance, Stability

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Main Highlights

Exercise ball for all-round trainingThis small yoga ball can effectively stimulate your muscles, train abdominal muscles, back, waist, legs and other parts of the body, enhance core strength, and help you improve physical endurance, flexibility and coordination.
Durable yoga ballThis small pilates ball is made of high-quality PVC material, which is soft and elastic. The surface is specially treated to achieve a non-slip effect. It is an ideal exercise equipment for home, gym and other places.
Easy to useThis small workout ball comes with an inflatable tube, which you can use to easily inflate it. After inflation, you need to quickly insert the plug. It is recommended not to over-inflate the fitness ball, about 4/5, so that the small exercise ball is easier to grasp and use.
Small and portableThe diameter of the excersing ball after inflating is about 25 cm/9,8 inches, and the weight is about 100g. It is small and light, easy to carry, and can also be used when going out, allowing you to enjoy the fun of training anytime, anywhere.
Wide applicationThe maximum load-bearing capacity of the pilates ball is about 100 kg, and it is widely used. Suitable for yoga, Pilates, gymnastics, pregnancy exercises, fitness, balance, core training and other sports

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8.3

Pimoys

Pimoys Small Pilates Ball 9 Inch Small Exercise Ball Mini Workout Yoga Balls for Gym Yoga, Core Training, Fitness, Workout, Stability, Improves Balance

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Main Highlights

PVC Material: This small pilates ball is made of quality PVC material that ensures durability and safety during your workouts. Its robust construction can withstand high pressure, making it ideal for intensive exercise routines
Multiple Function: Not just for pilates, this small yoga ball can be used for a variety of exercises to help improve your balance, coordination, and flexibility. Whether it's being used between knees, under the back, or to support other targeted exercises, it enhances your workout efficiency and increases the effectiveness of each session
Easy to Use: Equipped with a sturdy plug and a straw, this 9-inch small exercise ball is easy to inflate and set up. Simply use the straw to inflate to your desired firmness, and then press in the plug
Suitable Size: The compact size of this 9-inch workout ball makes it ideal for focusing on core, balance, and posture training. Its small size allows for easy manipulation and storage
Widely Applicable: This small exercise ball is useful for deepening stretches, enhancing muscle tone, and boosting core strength. Use it at home, in the studio, or even while traveling

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8.1

CIZEBO

CIZEBO Pilates Ball 8 inch, Small Exercise Ball for Between Knees with Needle Pump for Core Workout & Physical Therapy Yoga PT, Blue

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Main Highlights

Pilates ball small 8 inch, small pilates ball easy to inflate with needle air pump, inflatable like basketball, no need mouth blowing, NO longer hard to keep the air in, NO 'When removing pump, air escapes'
Small exercise ball for between knees, Exercise ball small easy to grip, anti burst for mini yoga, working out, fitness
Core ball, class or home exercise. For core training, flexibility and stretching, recovery for back, hip, leg etc
Physical therapy ball, pt relief& relax. For between knees, legs, thigh, pelvic floor exercise, relief back
Keep the ball away from wooden surface, when not use. Especially in hot summer. We kindly bring to your attention that this principle applies to most exercise balls
Number of items in the box: 1 pcs small exercise ball, 1pcs pump

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8.1

CIZEBO

CIZEBO 4 inch Therapy Ball for Release Hip Flexors, Pain Relief for Lower Back Thigh Muscles, Small Exercise Ball for Physical Therapy, Blue

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Main Highlights

4 inch therapy ball good for release hip flexors, lower back & thigh muscles pain relief. Note 1, If you use it for other needs such as pilates,yoga or other exercise, please note that this ball is 4 inch
Easy to inflate with the needle pump, no need plug. Note 2, the ball you received in deflated status
4 in ball. About the size depends on the degree of inflation, it may between 4"-5". you can refer the post pictures(the one with the scale), and the image upload by others. Note 3, If you have special requirements for the size, please check the size
Sturdy and thick ball, not soft. Please note it 50% thicker than the 8 inch or 9 inch ball. Note 4, If you are not especially looking for this kind of hard ball, it may be a little thick for you, not soft enough
Ball is not perfectly round, you can refer the picture uploaded by others. If you need it very round, you can take an electric air pumps(not included in the package). Note 5, most likely the ball you inflated, a bit like an ellipse

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Our Best Overall Choice

Best Choice

9.7

Trideer

Trideer Exercise Balls Physical Therapy, 9 Inch Pilates Ball Between Knees for Physical Therapy, Mini Exercise Ball - Yoga Ball, Small Workout Balls for Core Strength and Back Support

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Boosts Joint & Muscle Rehab: This Pilates ball, as ideal pieces of physical therapy equipment, works wonders in joint and muscle rehabilitation exercises (esp. back rehab!). It speeds up the recovery of a wide variety of body parts including the ankle, knee & hip joints and back & shoulder muscles, by improving posture, balance, and core stability, and in a safer way.
Unlimited Variety of Uses: These swiss balls for exercise are an extremely versatile tool to help strengthen your whole body. They add an extra level of stability in yoga, pilates, barre, fitness training and rehab or recovery programs so as to enhance your practices. Also works great for releasing deep layers of muscles and fascia pre- and post-workout at home, in the gym, or at the physical therapy offices and rehabilitation centers.
Easy to Inflate & Store: The 9 inch mini exercise ball inflates in seconds using the included tube. Make sure you quickly plug it tight using the included plug after inflation to avoid any air leaking. The small size of the pilates ball makes it easy to store at home or take with you to classes, therapy sessions, or when traveling.
Anti-Burst & Anti-Slip: These 9'' physioballs are made from long-lasting PVC free of phthalates. The physical therapy ball does not contain heavy metals (Pb, Cd, Hg, etc.) or 10 types of harmful heavy metal salts. The textured anti-slip surface delivers a firm and comfortable grip for your peace of mind when working out.
Avoid placing the Pilates ball on wooden furniture for long periods to prevent damage.

Show Price

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