| 主权项 |
1. A swim fin having frontward and rearward directions and a lateral direction, comprising:
a blade; and a foot pocket separate from the blade, wherein the blade extends in the rearward direction at both side portions of a rear end of the blade, and has both coupling arms spaced apart in the lateral direction, both first transverse engaging portions positioned on mutually faced inner surfaces of both coupling arms, and a first intermediate engaging portion positioned between both first transverse engaging portions, and the foot pocket has both second transverse engaging portions positioned on both side portions of a front end of the foot pocket and detachably engaged with both first transverse engaging portions, and a second intermediate engaging portion detachably engaged with the first intermediate engaging portion, and a first engagement of the first intermediate engaging portion and the second intermediate engaging portion, and a second engagement and a third engagement of both first transverse engaging portions are retained by a fastening element that is extractably and removably passed in the lateral direction through the second engagement and the third engagement. |
