Pocket springs are more commonly found in the world's most luxurious mattresses. Being individually pocketed is important - it allows each spring to react independently to the varying forces that are applied to it.
Producing pocket springs at the micro scale is not easy. Our patented micro pocket springs are of the perfect size and geometry to fit into our EVA midsoles. The 10mm high conical springs are precision placed, pre-compressed in their fabric pockets by an ultrasonic welding process.
Spring and Damper Midsole Arrangement
Professor Jim Richards, Professor of Biomechanics at the University of Central Lancashire, has played a key role in the development of this concept.
He describes how other shoes achieve a cushioning or ‘damping’ effect by using EVA in the midsole. However the SPRINGURU midsole construction deploys a ‘spring and damper’ arrangement, much like you would find in a car suspension system. This is an efficient arrangement that can lead to improved loading rates and reduced impact forces.
The cavities in the EVA midsole have been designed to maximise the effectiveness of the ‘spring and damper’ cushioning arrangement. The grid system within the cavities fulfil several functions: they precision locate the pocket springs; they enhance the ‘in parallel’ rather than ‘in series’, nature of the ‘spring and damper’ arrangement; and they help prevent the springs from becoming ‘coil bound’.
SPRINGURU Caution Message
SPRINGURU shoes have micro pocket springs built into the midsoles. They provide a unique 'springy' sensation underfoot. If you have any health concerns, which you think may be affected by this technology, or experience any discomfort as a result of wearing this footwear, please consult a medical practitioner before starting (or continuing) to wear them.