| 摘要 |
Each of the cushions in a pair of cushions has two flat sides which meet at a right angle corner and a convex side which interconnects the free ends of the two flat sides. The two cushions may be arranged in a wide variety of end-to-end positions to allow the exerciser to assume various postures. The cushions may be turned on their side and arranged with corresponding flat sides partially overlapping to form separated leg spaces for two people to sit on the cushions in a face-to-face relationship.
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