Problem to be solved: to practice the practice in the body without the instrument, and to practice the training of the beginners and the handicapped for the training of the beginner who can swim practice by adjusting the increase of buoyancy in the preliminary floating pad part.Thigh of human bodyFuselageFormed in a U-shaped curve with a gentle curve fitted from the buttocks to a part of the fuselageA rectangular floating pad with rounded cornersOrThe width 6 of the vertical width of the rubber band part 3 is inserted at a fixed interval at four points.Face fastener part 4 at both endsThe wide rubber band part with 5 is inserted into the four cuts alternately from side to inside in the lateral directionThe last is put out to the outside.ThighFuselageA part of the front part of the fuselageRearOr attached back and forth.Diagram
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