| 摘要 |
A roll extends around the upper end and along each side of an infant's back. The panel continues beyond the roll as a flap on which the infant sits. The roll is formed by an outer layer enclosing a resilient but compressible material and preferably has a larger diameter from the top of the panel, which may have a curved, convex contour followed by the roll, along each side of the panel to a position corresponding to the shoulders of the infant, and then decreases or tapers to the end of each side of the roll. Both the outer layer of the roll and a front layer of the panel may be quilted fabric layers with a rear layer of the panel being fabric.
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