Accessory car seat cushion

Abstract

A portable back support cushion ( 10 ) having two securing tie strings ( 22 ), and ( 20 ). The upper cushion portion ( 12 ) has a convex cervical support ( 24 ) that adequately supports neck structures. The middle cushion portion ( 18 ) has a flat surface with a longitudinal elevated thoracic support ( 14 ) that adequately supports mid-section dorsal structures. The lower cushion portion ( 26 ) has a flat surface with a longitudinal elevated lumbar support ( 16 ) that adequately supports lower dorsal structures.

1 . A back support cushion comprising a contour equivalent to the normal spinal curvature. 
   
   
       2 . The cushion of  claim 1  wherein said contour has a raised longitudinal elongated convex shape said equivalent to normal spinal curvature. 
   
   
       3 . The cushion of  claim 2  wherein said raised longitudinal elongated convex shape extends about the length from thoracic to coccyx range. 
   
   
       4 . The cushion of  claim 1  wherein said contour has another protruding convex shape about the length and width to support normal neck curvature.