| 摘要 |
A life preserver which requires no straps or like fastening means and which has an inherent ability to clamp firmly around the upper torso, over the shoulders and under the arms without immobilizing the user who can still swim, and this life preserver incorporates reasonably resilient means to hold the head upright well above the water, the donning of the life preserver is accomplished by simply passing the arms through obvious armholes while permitting portions of the item to pass down over the head and this donning can be accomplished easily with the pre-filled or pre-inflated life preserver.
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