ABOUT NLISSOPE AND SUPPORT Our flip flops come only in full sizes.If you normally wear half-size shoes, werecommend that you order the NEXT SMALLER SIZE. For example, a woman whowears a size 8.5 should order a size 8. DESIGN PHILOSOPHY Feet were designed to walk on soft,natural elements like sand,not the hard,flat man -made surfaces that make up so much of or modern world.Our sandals hug your arches like a natural footprint. FLAT FEET By controlling over-pronation related to functional flat feet, Nlissope orthotics helps restore the foot?s natural arch,enabling the feet to function properly and help relieve associated aches and pains KNEE PAIN Nlissope orthotics technology may help reduce knee pain not caused by injury or accident by controlling the internal rotation of the shin bone(tibia) and the rotation on the knee and hip joint. BACK OF HEEL PAIN Back of heel pain can be a result of inflammation of the Achilles tendon or Achilles Tendonitis.By reducing over-pronation, Nlissope orthotics Technology helps reduce medialtendo-achilles traction (a common cause of Achilles Tendonitis),therefore helping to alleviatepain in the back of the heel. BALL OF FOOT PAIN Our orthotics can help align the central three metatarsal shafts to correctly maintain the metatarsal bone position.Distributing the weight over the five metatarsal bones helps reduce impact and pressure,a common cause of the callus and burning pain in feet. Ideal for foot and heel conditions such as ?Plantar Fasciitis ?Aching Legs ?Back Pain ?Back Of Heel Pain ?Bunions ?Ball Of Foot Pain ?Overpronation ?Flat Feet ?Knee Pain ?Shin Pain