Balance training footwear

A method for using a sandal to provide balance training during a golf swing, comprising:

• affixing the sandal to at least one golf shoe that is worn by a golfer during the golf swing, the sandal including:
• a sole having an upper surface, a lower surface, a front portion, and a back portion, wherein the lower surface includes at least two side cant portions, wherein the front portion of the sole includes a forward angled edge portion adjacent to the lower surface that allows pivoting of the sole in a forward direction, wherein the back portion of the sole includes a backward angled edge portion adjacent to the lower surface that allows pivoting of the sole in a backward direction, wherein the at least two side cant portions of the lower surface allow canting of the sole in a side to side direction, wherein the at least two side cant portions include a medial side portion and a lateral side portion, wherein an angle of the medial side portion from horizontal is different than an angle of the lateral side portion from horizontal by at least one degree and facilitates balance training during the golf swing, and wherein the medial side portion and the lateral side portion are divided by a dividing interface disposed on the lower surface that has a non-linear profile;
• and
• a frictional surface disposed on the upper surface of the sole, wherein the frictional surface is made of a material that forms to a contact surface of the golf shoe applied to the upper surface of the sole and that facilitates non-slip of the golf shoe with respect to the upper surface of the toe portion and the upper surface of the heel portion during the golf swing.