Woman working at a home desk while sitting on a Flexi Muscles balance ball chair

Active sitting for home and office

A chair that works your core while you work

The Flexi Muscles balance ball chair swaps a static seat for active sitting, so your posture and core get stronger every time you sit down.

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Why a balance ball chair

Sitting still all day is the problem, not the chair

A normal office chair holds you in one fixed position for hours, which is exactly why your back stiffens up and your posture slips by 3pm. The Flexi Muscles balance ball chair fixes that by design: the ball underneath you means your body is always making small adjustments to stay balanced, which keeps your core switched on and your spine in a better position, without you having to think about it. You still get a backrest and wheels for normal desk use. The difference is what happens while you sit.

Man working at a desk in an open-plan office while sitting on a Flexi Muscles balance ball chair

Engages your core

Active sitting encourages your body to make subtle adjustments while seated. Those small movements engage your stabilising muscles all day, without a dedicated workout.

Improves your posture

The active sitting design encourages proper spinal alignment and helps reduce slouching, by engaging the muscles that support good posture.

Comfortable for long days

The combination of the balance ball, ergonomic backrest and supportive frame is built to stay comfortable through extended periods at your desk.

The ball comes off too

Unclip it from the frame and use it on its own for stretching, balance work or core exercises. One product, two uses.

Rolls where you need it

Smooth-rolling wheels let you move it around your workspace or between rooms, just like a normal office chair.

Built to last

Rated to a maximum weight of 150kg, with durable materials suited to daily use in home offices, classrooms and coworking spaces.

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One size, fully assembled features, ready for your desk.

Flexi Muscles balance ball chair with frame, backrest and removable ball

Active Sitting Balance Ball Chair

The chair, ready to ship

An ergonomic frame and backrest built around a removable stability ball, with smooth-rolling wheels for your home office, classroom or coworking space.

R1,599.00 R1,799.00 Save R200 (11%)
  • Maximum weight 150kg
  • Smooth-rolling wheels included
  • Ball detaches for separate exercise use
  • Pump included in the box
Shop the chair, R1,599

Free shipping nationwide. Delivered in 2 to 5 business days.

Who it's for

One chair, wherever you need to sit better

Active sitting works the same way wherever you use it: small, constant adjustments that keep your core engaged and your posture honest, instead of letting you sink into a fixed position for hours. Suitable for office workers, remote workers, students and fitness enthusiasts, anyone looking for a more active and engaging seating option.

Home office and study

Specifically suited to desks, workstations, study areas and home offices, so it slots straight into your existing setup. If you spend hours at a laptop, the constant small balancing keeps your core working and your back straighter, without changing how you work.

Workplace and classroom

Wheels make it easy to move between desks, and it holds up to daily use across home offices, classrooms and coworking spaces. In shared spaces and long office or school days, that durability and mobility matter just as much as the active sitting benefit itself.

Standalone exercise

Detach the ball whenever you want a dedicated stretching, balance or core session, then clip it straight back into the frame. One purchase covers your desk chair and a piece of home exercise equipment, rated to 150kg so it holds up to real training.

Reviews

What our customers say

"Been using the chair for a week now, can already feel a huge difference on my body and posture."
Willmine✓ Verified purchase
"Great product for starting weightlifting when you dont have access to a gym."
Mongi✓ Verified purchase
"I was skeptical about it at first, but it has not given any issues, and it has been used near daily for months now. Very comfortable and it even carries my weight well (around 100kg)."
De Wet✓ Verified purchase
"Great packaging and a pump and all extra goodies is added, awesome product."
Zaheerah✓ Verified purchase
"Perfect chair for sitting for long hours at the office. Definitely recommend this chair! No more hip discomfort!"
Marti✓ Verified purchase

FAQ

Everything you are wondering

A balance ball chair combines a stability ball with a supportive frame and backrest to create an active seating solution.

Active sitting encourages your body to make subtle adjustments while seated. These small movements engage stabilising muscles, improve body awareness, and help reduce the passive sitting associated with traditional office chairs.

Yes. The active sitting design encourages proper spinal alignment and helps reduce slouching by engaging the muscles that support good posture.

The chair has a maximum weight limit of 150kg.

Yes. The combination of the balance ball, ergonomic backrest, and supportive frame is designed to provide comfort during extended periods of use.

The chair is suitable for office workers, remote workers, students, fitness enthusiasts, and anyone looking for a more active and engaging seating option.

Absolutely. The chair is specifically designed for use at desks, workstations, study areas, and home offices.

Yes. The chair features smooth-rolling wheels, allowing you to move it easily around your workspace or between rooms.

Yes. The balance ball can be removed from the frame, allowing it to be used separately for fitness, stretching, balance, and core exercises.

You are covered by our 14-day return policy on unused items, with a full refund. See the full details here or in the footer of any page.

Ready to sit better

Make your desk chair work for you

Active sitting that builds your core and posture in the background, while you get on with your day.

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Free shipping nationwide. Delivered in 2 to 5 business days.

Flexi Muscles balance ball chair Shop now