I was very skeptical about this cushion, especially when I saw how thin it was. What a pleasant surprise. Not only does it feel good but the pain I had in my legs disappeared. I had no idea it was related to what I was sitting on. I highly recommend this cushion. I have purchased many cushions in the past but none have worked like this one. – Wayne
Before I started to work on the design of this cushion, I looked at many different cushions out there. I even bought one from a local pharmacy for $19.99 that came in a fancy box, that was 3 1/2 inches thick and I said to myself I have a daunting task to convince someone why they should spend $90 (without shipping cost) on our cushion.. When I tried this cushion on a chair I noticed that it was not big enough from front to back. It cut off circulation midway under my thighs. Not only that, I just sank in on the fluffy foam and noticed that it was difficult to move around. This caused stiffness in my lower back in 5 minutes. This made me look around for a High Resilience foam that would not sink but keep one properly supported like the one you see on airplanes and high end movie theaters. We got about 7 different densities of this foam to test before I chose the one we now use in our Sports Cushion. This allowed us to keep the thickness to 2 inches. Keep in mind a 3 1/2 inch foam looks good on paper and makes you think you are getting better comfort, but it also raises you higher and can be problematic to use in a car or some chairs or if you are already tall, not to mention the fact that most of these cushions are sized only about 15 inches from to back, thereby cutting off circulation under the thighs for folks who are 175 lbs. and above. Also, they only reach half way on a regular chair. We also found that gel, foam or air was not enough to neutralize the pressure points when our body comes in contact with the surface. We chose LiquiCell Technology -Liquid Filled Membranes for the following reasons: Long Term Blood Perfusion When Sitting on Three Different Cushioning Materials Goossens, Delft University of Technology, (Video and white paper available on our site) Delft University conducted a study to determine the affect of various cushioning materials on blood perfusion (flow) over time. The aim of the study was to compare blood perfusion in the tissue in a live setting as opposed to a laboratory to get a more accurate reflection of real life conditions. The results of the study show that from the initial point of contact to some time later, LiquiCell actually improves blood perfusion by 150%, whereas gel and foam show a decrease in blood perfusion. Using an innovative combination of a low viscosity fluid and strategically placed seal points that control the flow of liquid, LiquiCell reduces discomfort associated with prolonged contact between the body and an object. By equalizing perpendicular pressure at the point of contact (thus reducing pressure), soft tissue compression is greatly reduced thereby significantly reducing skin friction and soft tissue shear stress. This also provides relief from tail burn, fatigue and fidgeting. The top covering we use was carefully selected to enhance micro movements to keep the nutrient and circulation going. The bottom has the highest grade of Vinyl used in high end sofas to support the weight and equal distribution, Our supplier assured us that there was no higher grade out there than the one we used. Medical and scientific evidence proves that while gels, foams and air do provide some relief of discomfort through perpendicular pressure reduction, they do not protect against the harmful effects of friction and shear stress, two of the most influential factors related to discomfort, pain and trauma (pressure sores). Each LiquiCell pad is specifically designed and customized to meet the needs of the product application. Thin, light weight and extremely pliable, the pad is comprised of four urethane membranes sealed around a low viscosity liquid. Seal points control the flow of liquid to equalize pressure and provide a cushiony lubrication at the point of contact on the body. LiquiCell and the High Resilience Foam allows us to keep the thickness at 2 inches in our Cushions. Hand stitching the four LiquiCell membranes so that they are under the tail bone and the thighs adds to the cost. We chose to make this in USA Los Angeles, 45 miles from our office in Newport Beach, CA to keep an eye on quality and we wanted to be able to make improvements along the way. Besides, we wanted to create jobs in our local community. We added a Regular size recently, which is slightly smaller than the Large size you got. We recommend Large in any type of automobile, SUV or truck and office or home chair that can accommodate the 18 X 17 X 2 inch size and for chairs that are smaller, we recommend the Regular Size 17 X 15.5 X 2 inches. Last month we introduced our Ergo 21 Coccyx Cushion with a cut out under the tailbone, which is essentially the Sports Cushion with a plusher crushed velvet fabric. We designed this in such a way that you can just rotate it and use it like a regular cushion, with the LiquiCell Membranes still providing the comfort around the tailbone and thighs.There is hardly any cushion out there that does this. I am happy to say that last week we also introduced our much anticipated Ergo 21 Lumbar Support Cushion, now available on Amazon. You can read the story behind its creation in the Description section on Amazon and on our site. We constantly read every feedback and reviews and thousands of reviews of other cushions out there and take the knowledge and suggestions and keep making improvements. Our philosophy is to make every effort to provide the best possible comfort. We realize that there is no one cushion solution for all body types,weights, chairs, cars and situation, That’s why we have 3 different styles, plus the Lumbar Support Cushion to meet the different needs. Most of our clients get one of our Original and either the Sports or the Coccyx model to use in a variety of places. This way you can use one that works best on your office chair, kitchen chair, plane, seminars,concerts and the other in your automobile. We are here to provide an excellent customer experience. Feel free to contact me anytime I can be of assistance:) Best Regard, Steve Gambhir – Ergo 21 – Product Specialist/Designer