Patent ID: 8303361

Claim:
A floatation device comprising: an inflatable chamber having a forward end, a rearward end, sides, an upper surface, and a lower surface, the inflatable chamber comprising at least one major panel and at least one cavity panel; and a cover, wherein the major panel surrounds the cavity panel and the major panel joins the cavity panel at cavity seams; wherein the cavity panel defines an abdomen cavity extending through the upper and lower surfaces of the inflatable chamber, the abdomen cavity defining a base end adjacent the rearward end of the inflatable chamber and a tapered end adjacent the forward end of the inflatable chamber, wherein the abdomen cavity is symmetrical about a longitudinal centerline of the inflatable chamber so as to define a first half extending clockwise between the base end and the tapered end and a second half extending counterclockwise between the base end and the tapered end, and wherein the first half and the second half each defines a shape that transitions from a first major radius at the base end to a first minor radius to a second major radius to a second minor radius at the tapered end; and wherein the cover is fitted about the abdomen cavity.