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| | Fluid filled insole with metatarsal pad - Patent 6178663 |
 | | The metatarsal pads 180 are substantially equally spaced transversely from the imaginary longitudinal centerline of each other, and spaced from the medial and lateral margins of the bladder. |
 | | The metatarsal pads 180 are arranged in a shape that laterally, medially, transversely and longitudinally matches the anatomical structure of the proximal forefoot region, the shape being for example, but not limited to, an arc, a semicircle, or a trapezoid, the convex side of the shape facing in a distal direction. |
 | | The metatarsal pads 80,180 are formed by welding the upper bladder layer 12 to the lower bladder layer 14 circumferentially around the pads 80,180 to form a barrier 82,182. |
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