Samurai Insoles Ninjas | Arch Support Shoe Inserts- Plantar Fasciitis, Flat Feet.Samurai Insoles Ninjas Arch Support Shoe Inserts Plantar Fasciitis, Flat Feet. PODIATRIST DESIGNED, USA MADE: Ninjas Arch Support Shoe Inserts were designed by a leading podiatrist, and are made right here in the USA, to address the root causes of tired, painful feet. INSTANT RELIEF: Simply insert Ninjas Arch Support Shoe Inserts under your shoes' factory insole, instant relief in under 10 seconds of effort! LOW PROFILE, LIGHTWEIGHT: You get the all