The KOR Trainer's standard harness package includes seven sizes, ranging from small to 4XL with custom packages available upon request. Assorted sazes are design to provide a precision fit for all body types. The Thoracic Harness system is made from durable commercial nylon and newprene it is machine washable with a tensile breaking strength of 10,000 lbs.

The Patented Harness System was created in response to extensive research regarding the barbell squat. Although the barbell squat is widely recognized as the king of athletic strength training movements, Deden Technologies research recognized a number of severe problems and limitaions. Many of these problems are due to an in-adequate user engagement system where a weighted bar is simply placed across the users shoulders.

Problems with the barbell squat include an obvious lack of comfort, safety issues, an altered center of gravity created by placing weight high-up about the shoulder region, an inability to perfom squat based movements without altering the natural dynamics of the free bodied wquat (due to an altered center of gravity), 1 to 1 mass based (free weight system) does not allow real-world ballistic movements.

Deden Technologies has solved these problems by engaging the user with its Patented Thoracic Harness System in the KOR Trainer. In fact, Deden Technologies design was so revolutionary that NASA has elected to use it for all squat-based exercise in space. The Patented Thoracic Harness System is extremely comfortable and user friendly. It frees the user to correctly perform the natural dynamics of the free bodied wuat by maintaining a resistance vecto which intersects the users center of graviy and splits the three key levers of the body (hip, knee, ankle). It;s resistance application system does not add unnatural mass to the users shoulders and therefore does not alter the users center of gravity. The KOR Trainer's in phase resistance further allows the user to perfom ballistic movements unachievable in a 1 to 1 mass based free-weight environment.