Designed as an advanced model for athletes who have graduated from the Original Archxerciser.;Affords relief from sore feet by strengthening the foot's intrinsic & extrinsic musculature.;Treats a variety of common foot ailments including plantar fasciitis & heel spur syndrome.;Proven to improve jumping performance & acts as a preventative aid against sore feet.;This item is not returnable due to hygiene reasons.