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Orthopedically Tested
ErgoMax™ 3D Adjustable Chair Cushion
HG004 Black
$84.99
Sale price
$84.99
Regular price
$43.56
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ErgoMax™ 3D Adjustable Chair Cushion
Adjust. Support. Comfort. Work Harder Without Pain.
$84.99
Sale price
$84.99
Regular price
$43.56
🚚 Shipping Information
FREE Worldwide Shipping – No hidden fees, no minimum order.
Shipping time: The time it takes for items to be shipped from our warehouse to your destination.
RegionEstimated Delivery Time
USA & Canada 5–11 business days
Germany 5–12 business days
Netherlands & Belgium 5–12 business days
UK & Rest of Europe 5–12 business days
Australia & New Zealand 5–12 business days
Note: Some products may ship separately and arrive at different times because we use multiple warehouse locations.
Shipping may take longer than estimated for certain countries. During high-volume periods (e.g., sales, holidays), your shipment may take a few extra days. We never sacrifice product quality for speed — thank you for your understanding.
💰 30-Day Money-Back Guarantee
Our Promise: Try it on your next flight. If you're not completely satisfied, full refund—no questions asked.
How it works:
• Use it on your next flight or trip
• If not completely satisfied, contact support within 30 days
• No questions asked—full refund
• You don't even need to return it
Your Office Chair Is Destroying Your Back.
Sitting all day at work is destroying your back, hips, and posture—leaving you with chronic pain, poor spinal alignment, and zero comfort.
ErgoMax™ 3D Adjustable Chair Cushion solves this with patented 3D ergonomic design and adjustable inflation technology that customizes to your unique body, providing perfect support throughout your 8-hour workday—clinically proven to reduce sitting pain by 87% while improving posture in just 5 days.
Why People Love ErgoMax™
Personalised Adjustment For Your Unique Body
Patented adjustable inflation technology lets YOU control firmness — from soft to ultra-firm — adapting to your weight, chair type, and comfort preference. Works for lightweight users to 300+ lbs. Adjust in real-time as your body warms up. No one-size-fits-all compromise.
Medical Grade Ergonomics That Improves Posture
3D contour design clinically proven to reduce sitting pressure by 73%. Supports natural spine curve, prevents slouching, and promotes proper hip alignment. Recommended by physical therapists. Within 5 days, your posture automatically improves.
Works Everywhere — Office, Car, Home, Travel
Universal 18"W x 16"D dimensions fit office chairs, car seats, work trucks, gaming chairs, airplane seats, wheelchairs, and couches. Built-in carry handle for portability. Adjustable inflation means perfect support on any chair type
Questions? We've Got Answers
How do I adjust the firmness?
Simple! Use the easy-access inflation valve with the included hand pump. Pump air in to increase firmness, or release air for softer support. Takes 30 seconds to adjust to your perfect level.
How long does it take to find my perfect firmness?
Most users find their ideal firmness within the first day. Some adjust throughout the week as their body adapts. The beauty is you can change it whenever you want—no permanent commitment to one setting.
Will it work for my office chair?
Yes! Dimensions are 18"W x 16"D, fitting 95% of standard office chairs perfectly. Non-slip base keeps it in place. If your chair is unusually small, we can help you verify fit before purchase.
Can I use it in my car?
Absolutely! Many users keep one cushion and move it between office and car. Carry handle makes transport easy. Works great on car seats, truck seats, and any automotive seating.
How quickly will I notice relief?
Most users report immediate comfort once adjusted to their firmness level. Posture improvements typically appear within 3-5 days. Maximum pain relief achieved by day 14.
Is it washable?
Yes! Cover is completely removable and machine-washable (cold water, gentle cycle). Wash as often as you like. The foam core is spot-clean only—never submerge.