A brand new CustomPro Modular insole system enabling you to personalise the comfort and support of your work shoes by changing the arch inserts like a jigsaw. This adjustable insole allows those that suffer from flat feet, high arches or plantar fasciitis to make their work shoes more comfortable for those long hours on their feet. Transform trainer sole is all black UltraGrip Non-Slip soles Energy-absorbing midsole Eliminates rubbing Breathable Eliminate the buildup of plantar pressure Lightweight yet durable Full UK sizes 3-12 MODULAR INSOLE Shoes come with insoles and 3 arch inserts (firm, medium & soft) Clear labelled for easy use To decide which one is right for your feet: Low arch - soft insert (yellow) Medium arch - medium insert (green) High arch - firm insert (red)