samurai insoles sumos- super-padded orthotics for flat feet- perfect for work boots, roomy sneakers or shoes (mens 7-7 1/2 | womens 9-9 1/2) samurai insoles the ability to walk pain-free is vital to the quality of life you deserve. when flat feet overpronate, or shoes don't offer adequate support, the tendons and ligaments of the foot can become strained and fatigued. your body immediately springs into action, trying to compensate for your feet not operating at peak efficiency. the energy needed to compensate can be massive, leaving you tired, aching, and drained. this can create a "domino-effect" of pain, radiating from your feet to your knees, hips, or even the low back. samurai orthotic insoles for flat feet are biomechanically designed to optimize the function of your feet and legs. they provide a natural form-fitting feel, while controlling the flattening of the foot within the shoe. by incorporating a springy polypropylene orthotic shell within a high-density padded case, the samurai orthotic insole is able to absorb shock during impact activity, as well as realign the foot joints when necessary. some of our competitors call themselves "orthotics", without actually containing any orthotic shell. why do they call them "orthotics" then? yeah, we're not sure either...... we're so absolutely sure that samurai insoles will help you get back to doing more of the things you love, we're offering an unconditional, no-questions-asked 60-day money back guarantee. if, for whatever reason, samurai insoles do not satisfy you in any way, or aren't the best insoles you've ever tried, simply send them back within 60 days and we'll refund you the full purchase price! no monkey business. if samurai insoles are not for you, no worries, we'll cheerfully issue you a refund and stay friends, promise!