Like many start-ups, Dynamic Systems began operating as a business out of a home garage. Its founder, Charles Yost, was employed at the time with Stencel Aero Engineering Corporation in Arden, NC. While under contract with NASA to study improvements to crash-safety in aircraft, Yost created a material with impact-absorption and dissipation properties, open-cell structure, and slow-return -- or memory. He called it "Temper" foam. 

When the contract ended, and Charles was laid-off, he decided to manufacture the foam full-time, as he could see its potential for a variety of market applications. Working closely with NASA Ames Research Laboratories and its Biomedical Applications division at Southwest Research Institute, they explored uses for the material as foot supports, padding for prosthetics and orthotics, and pressure injury reduction.

Fast forward 50 years later, and Dynamic Systems, now in a 29,000 sq. ft. facility with 15-20 employees, continues to manufacture premium, high-performance, visco foams. SunMate®, Pudgee® and Liquid SunMate® Foam-in-Place Seating, also invented by Mr. Yost, are improved, second- and third-generation derivatives of the original formulation. They are used all over the world in environments as varied as medical, aviation, auto, industrial, furniture, sports and more.

In the coming months, we will be looking back at the company's major milestones, recognizing its amazing customers and employees, and celebrating the many intriguing applications for this inconspicuous, pervasive, and revolutionary material.

If you have a story you would like to share about your experience with Charles, DSI or SunMate products, we'd love to hear it! Contact us here.

In addition to our waterproof fabric slipcovers, we now offer velour slipcovers for sale online. More sizes have been added as well. Now you can order slipcovers to fit cushions up to 4" thick. Also, a limited inventory of discounted Dartex and Stretch-4 waterproof slipcovers have been added to our online store. These slipcovers fit non-standard cushion sizes or thicker cushions and have been marked down 50%! Check our inventory to see if we have a slipcover for you.

Discounted SunMate® overstock 50% off regular pricing, available to order directly online. Great for motorcycle and kitplane seat builds, tractor or wheelchair cushions, stadium cushions, pet beds, mattress pads and more!

Some inventory may be slightly off-color, but this is purely cosmetic and does not effect cushion performance. No returns allowed on discounted material. All sales are final. Click here to see what's in stock.

If you are ordering a standard 16"x16" or 16"x18" size SunMate®, Pudgee® or Laminar™ cushion through our online store, but need it waterproofed, we now provide the option of selecting a silicone waterproof coating pre-applied to your cushion before shipping. Simply go to the Other Products > Covers and Coatings page and add the Waterproof Coating to your cart.

SunMate® FRG cushions provide the same high impact energy absorption and soft pressure properties as regular SunMate®, but with an added element of safety. SunMate® FRG contains a non-halogenated fire retardant that allows the cushion to pass more stringent fire tests.

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We have added more sizes, thicknesses, and pressure quality options to our SunMate®, Pudgee® and Laminar™ cushion collections available through our online store. Additional slipcover sizes are now available too. If we have a product you would like to order online, but don't see it on our website, please let us know and we will add it if possible. Orders may be placed through the contact form as well. Be sure to include a phone number or valid e-mail address so we may contact you if we have any questions.

SunMate® orthopedic pet beds are now available for order directly through this website! Our high-quality pet pillows are composed of 100% premium shredded SunMate® polyurethane foam fill encased in a zippered, breathable, 80 gsm, non-woven heavy liner. The zippered outer cover is removable and machine washable. Choose a Green Camo pattern or True Timber™ pink or brown satin polyester fabric on one side and soft beige sherpa fleece on the other. 27" x 36", approximately 5" deep. Weight: 7 lb.

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On May 21, 2015, Charles A. Yost was posthumously recognized for his contributions to the development and marketing of viscoelastic foam and inducted into the Flexible Polyurethane Foam Hall of Fame by the Polyurethane Foam Association at their spring General Business meeting in St. Petersburg, Florida. Robin Yost, president and CEO of Dynamic Systems, Inc., received the award on the family's behalf.

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