* Footprint Kingfoam Everyday Medium Flat insoles are the perfect insole for shoes with limited room, designed for "extreme shock dampening" * With a bright green foam bottom layer and a woven tonal-black top layer * Adapting to each step utilising Footprint's formula (the same that NASA uses ), reforms to your foot with each foot placement, giving you custom protection with each step * 5mm thick * Nano Technology Energy Absorption is flexible when moving underfoot, but momentarily freezes under impact before transferring the energy, keeping your feet protected * Absorbs over 90 % of Impact Energy in Lab Testing Compared to 53% in other competitors' insoles (ASTM F 1615-1999) * Body heat-activated, moulding begins once the insole warms up to your feet, or speed up the process with a home heat moulding method. Be sure to consult the packaging or the Footprint website for instructions * Trim down to fit your shoe size * Sizing: M (UK 4 - UK 9.5), L (UK 8 - UK 13)