Fortis PI 400 - 24/7 - Control Room Chair
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Struggling with Back or Neck Pain? The Fortis PI 400 Is the Solution You've Been Waiting For!
If you're spending most of your day seated and dealing with tension, stiffness or nagging aches, you're not alone and you don’t have to keep putting up with it.
Introducing the Fortis PI 400 Ergonomic Office Chair from KOS Ergonomics. Expertly designed to reduce pain, support better posture and deliver all-day comfort, this chair transforms how you feel at work, whether you're in a home office or a busy workplace.
What Makes the Fortis PI 400 the Perfect Chair for Professionals?
Relieves Neck and Back Pain:
The adjustable headrest and lumbar support are designed to ease tension, promote healthy alignment and take pressure off your spine — even during long hours of focused work.
Adapts to Your Body, Not the Other Way Around:
Customise everything from armrest height and seat depth to tilt tension and chair height. With full 4D adjustability, you’ll find your ideal position quickly and easily.
Built for Long Days and Demanding Workloads
With a reinforced aluminium frame, durable foam cushioning and smooth-glide 60mm castors, this chair is made to perform day after day, hour.
Strength and Comfort for Every Body Type
The Fortis PI 400 supports up to 150kg and is certified for 24/7 use. That means reliable comfort for users of all sizes who needs a chair that can keep up with demanding work schedules.
Trusted by Experts
Recommended by healthcare professionals and ergonomists, this chair is a smart choice for reducing musculoskeletal strain, boosting focus and supporting long-term wellbeing.
Certified for Performance and Safety
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EN 1335-1:2020 – Dimensional compliance for optimal ergonomics
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EN 1335-2:2018 – Safety-tested to meet strict office chair standards
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BS 5459-2:2000+A2:2008 – Heavy-duty 24-hour use certification
Ready to Leave Pain Behind?
The Fortis PI 400 isn’t just an office chair. It’s a proven tool for reducing back and neck pain, preventing fatigue and helping you stay focused and productive throughout the day.
Your body will feel the difference from the first day.
Visit our showroom today to test out the Fortis PI 400 Ergonomic Office Chair, or buy online now for quick delivery and exceptional service. Don't miss out on the ultimate chair for your workspace!
👉 Don’t wait—your back will thank you.
Try In Tipperary Try In Dublin
Posture Tips & Improved Ergonomics
Sitting for long periods can often lead to discomfort or pain, especially in areas like your hips, lower back, and tailbone. Here are some simple, effective tips to help improve your posture and reduce common issues like hip pain when sitting, lower back pain when sitting, and tailbone pain when sitting.
1. Support Your Lower Back
If your lower back hurts when sitting, it's often due to a lack of proper support. Make sure your chair has good lumbar support to keep your spine aligned. You can also use a small cushion to provide extra support if needed.
2. Keep Your Hips at the Right Angle
When your hip hurts when sitting, it may be due to poor alignment. Your hips should be level with or slightly higher than your knees. Adjust your chair height so your feet are flat on the ground and your knees form a 90-degree angle. This can help reduce hip joint pain while sitting and prevent buttock pain when sitting and lying down.
3. Adjust Your Seat Position
For those dealing with coccyx pain when sitting or a sore tailbone from sitting, ensure your seat isn’t pressing too hard on your tailbone. Try a cushion with a cut-out section to relieve pressure on the tailbone and improve comfort.
4. Move Regularly
If you feel buttock ache when sitting or hip discomfort when sitting, it's a sign that your body needs a break. Stand up, stretch, or take a short walk every 30-60 minutes. Regular movement can ease tension and prevent hip ache when sitting or lower back pain while sitting.
5. Exercise for Strength and Flexibility
A good workout for back pain can strengthen your core and back muscles, reducing discomfort. Exercises like gentle stretches or yoga can help relieve bottom pain when sitting, butt pain while sitting, and improve overall posture.
By following these posture tips and incorporating ergonomic tips into your daily routine, you can reduce discomfort and improve your overall well-being while sitting. Make sure to listen to your body and adjust your workspace as needed to stay comfortable throughout the day.
Download Your FREE Posture Watch Poster!
Get Serious About Your Posture With This Helpful, Free Reminder!
Alternative Products
Invictus PI 4000 | Back Care Office Chair | Posture-Improving Chair
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Find Your Perfect Solution To Pain-Free Work.
Expert Advice
Our experts are highly trained and experienced in providing tailored solutions for back pain sufferers.
Get in touch with one of our Experts and they will be happy to offer simple guidance on what you should be looking for in an Ergonomic Product!
Visit A Showroom
Try out all of our Back Care Ergonomic Chairs in one of our 2 Showrooms. You have the option of Tipperary or Dublin.
Please note, our showrooms are by appointment only.
This is down to the fact that we always offer our full, undivided attention to every customer. You will meet an Ergo Expert in person, who will recreate your work set up and offer advice on the best office chair for your situation.
Purchase Online
If you know what Ergonomic Product you want, you can easily purchase online, or request an official quote!
To request a quote, simply add the product to your basket and "Request A Quote".
You can also request a quote from our dedicated Customer Support team!
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