Patent ID: 7794364

Claim:
Apparatus for use in exercising in water comprising a shoe foundation configured to be attached to the foot of a user, said shoe foundation being configured to extend along said foot when worn by said user and comprising forefoot, mid-foot, and heel areas and a plurality of drag-generating elements attached to each side of said shoe foundation and spaced along said shoe foundation in a direction extending from the forefoot area to the heel area, below the user's ankle and above the sole of said foot, when said shoe foundation is worn by said user, for generating drag forces in said direction in water on said foot during use, wherein said drag-generating elements generate larger drag forces in water when said shoe foundation is moved rearward in said direction at a given velocity than when moved forward in said direction at said velocity and generate substantially equal drag forces on both sides of said shoe foundation, wherein a respective rearmost one of said drag-generating elements is located at the rear area of each side of said shoe foundation, and said rearmost one of said drag-generating elements is larger than the other drag-generating elements on the same side of said shoe foundation.