| 摘要 |
A base has upper and lower surfaces. The base has front and back edges. First and second side walls extend from the base. A center wall extends from the base spaced equally between the side walls. The side walls and the center wall have concave upper edges. The upper edges are adjacent to the back edge being at an elevation greater than at the front edge. The center wall divides the system into first and second reclining surfaces. The upper edges of the side and center walls are at an elevation above the upper edges of the reclining surfaces. Similarly configured first and second leg dividers extend vertically from the base adjacent to the front wall. The first and second leg dividers are in the first and second reclining surface. |
