ErgoFit PI 500 | Ergonomic Office Chair | Standard
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One of our Premium option here at KOS
The ErgoFit PI-500, the ergonomic chair designed to adapt to you, supporting your spine, enhancing comfort, and delivering long-lasting relief for the way you work.
What Makes the ErgoFit PI-500 Different?
Engineered for Everyday Comfort
This chair is built with the science of ergonomics at its core. Every adjustment is designed to reduce strain, improve posture, and help you stay productive without discomfort.
Adaptive Support That Fits You
Your workday is dynamic—your chair should move with you.
The ErgoFit PI-500 features:
- Seat depth adjustment for proper thigh support and circulation
- Synchronized mechanism with multi-position lock to encourage natural movement and flexibility
- 4D armrests that adjust in every direction for personalized arm support
- Class 4 gas lift for smooth, secure height adjustment
Sit Smarter. Stay Energized
The seat is crafted from PU-moulded foam, distributing weight evenly and reducing pressure points—keeping you comfortable for hours
Built with Strength and Stability
- Aluminium alloy base (Ø700mm) ensures durability without excess weight
- 60mm PU brake castors designed specifically for hard floors, offering stability when you need it and smooth rolling when you move
No more struggling with:
- Lack of proper back support
- Chairs that don’t move with your body
- Worn-out foam that loses shape
- Poor mobility on hard floors
The ErgoFit PI 500 solves these problems with premium engineering and thoughtful ergonomic design.
Built by Experts. Trusted for Performance
Every element meets the highest ergonomic and safety standards, giving you confidence in both comfort and durability. This isn’t just a chair, it’s a commitment to healthier sitting.
Experience the Difference
With the ErgoFit 500, you’ll finally know what true ergonomic support feels like: comfort that lasts, movement that adapts, and design that prioritizes your well-being
👉 Try it today — online or in-store.
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
ErgoFit PI 510 | Ergonomic Office Chair
Frequently Asked Questions
A: This is an online ergonomic training course designed to teach participants how to assess Visual Display Units (VDU) / Display Screen Equipment (DSE) safely and in compliance with Irish and European health & safety regulations. It covers workstation assessments, ergonomics, and MSD prevention.
A: This course is suitable for anyone responsible for workplace safety or office ergonomics, including:
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Health & Safety managers or consultants
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Health & Safety representatives
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Occupational health professionals
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Facilities management staff
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Architects involved in office design
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Office managers and business owners
A: No. This beginner-friendly online DSE/VDU course is suitable for anyone, regardless of prior ergonomics or health & safety experience.
A: The course is fully online via Microsoft Teams, featuring interactive lectures, group exercises, explainer videos, polls, and practical workstation assessments.
A: The course runs for 1 full day (9am–5pm) with breaks.
A: The course is delivered by highly experienced ergonomic and health & safety professionals from KOS Ergonomics, who work with leading Irish companies to reduce workplace risks and improve office ergonomics.
A: Yes. Participants who successfully complete the theory exam and practical assessment will receive a KOS Training Academy Level 1 VDU / DSE Assessor Certificate.
A: You’ll need a computer or tablet with a camera, microphone, and stable internet connection. A typical home or office workstation is sufficient for the practical exercises.
A: Key topics include:
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Ergonomics and anthropometrics for office work
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Hazards and risks associated with VDU/DSE use
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Legal requirements under Irish and EU legislation
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Workstation setup, environmental factors, and emerging trends (hot-desking, sit-stand desks, home working, laptop/tablet use)
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Practical assessment and evaluation techniques
A: Yes. The course covers Regulation 72 of the 2007 Safety, Health & Welfare at Work Regulations, along with European Directive 90/270/EEC to ensure compliance for all EU countries.
A: Absolutely. By training staff as certified VDU / DSE assessors, your organisation can reduce musculoskeletal disorders (MSDs), improve employee wellbeing, and ensure compliance with legal obligations.
A: Yes. Participants have access to KOS Ergonomics’ expert advice and resources for any follow-up questions related to workstation assessments or ergonomics.
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