Abstract: An improvement in footwear consisting of sandal footwear having an interior plenum adapted to contain sand or other granular material, the sand providing a natural environment walking surface for the bottom of a person's foot. The footwear has a lower shell and attached bottom sole to form a cuplike shell with upraised heel part, and an upper cover joining the lower shell and covering the front top portion of the footwear to form with the lower shell the plenum leading to the ankle inlet/outlet mouth. Situated interiorly to the enclosed plenum upper cover is a toe pad providing a defined spacial clearance between itself and the persons's toes, the pad adapted to be engaged by the foot when the foot lifts the footwear for purposes of retaining the sandal upon the person's foot while being moved.

Abstract: Footwear consisting of a sandal having a plenum adapted to receive the person's foot as well as sand or other granular material, said sand providing a natural environment walking surface between the bottom of the person's foot and the sandal mid-sole, the footwear also having a bottom sole to engage the ground, the bottom sole a part of a lower surrounding cup-like shell with upraised heel part adapted to receive and secure the mid-sole, the upper rim portions of the lower shell providing means for securing a toe strap, heel strap, and instep strap, the instep strap and toe strap being loose and not contacting the foot while the person is standing but contracting the foot when the footwear is lifted up along with the foot. The footwear completely encloses the person's foot by continuing above the forward portion of the lower shell with an upper cover, and finally a plastic top closure material to engage the person's ankle.