Haptic system for footwear article

A haptic system for promoting identification of an alignment of a pair of footwear articles relative to at least one foot of a user, the haptic system comprising:

• the pair of footwear articles comprising a first footwear article and a second footwear article structured to be worn on a first foot and a second foot, respectively, of the user, at least one of the first footwear article and the second footwear article comprising:
• a footwear article body defining a footwear article interior portion therein that is configured for receiving one of the first foot or the second foot of the user via a foot opening;
• and
• a collar provided along a top portion of the footwear article body so as to define at least a portion of an outer perimeter of the foot opening, the collar comprising an inner collar portion extending along an inner body portion of the footwear article body and an outer collar portion extending along an outer body portion of the footwear article body;
• wherein the inner collar portion is defined by an inner collar portion configuration and the outer collar portion is defined by an outer collar portion configuration, wherein the outer collar portion configuration defines a sinusoidal profile comprising a plurality of serially arranged curvatures;
• wherein an inner collar portion length is extending between a first inner collar portion and a second inner collar portion;
• wherein a first inner collar portion configuration of the first inner collar portion at least partially corresponds to a first palm curvature of a first hand of the user and a second inner collar portion configuration of the second inner collar portion at least partially corresponds to a second palm curvature of a second hand of the user so as to generate a haptic response to the user to differentiate the first footwear article from the second footwear article upon the user engaging the inner collar portion of one of the first footwear article and the second footwear article;
• wherein an inner collar portion height of the inner collar portion is different than an outer collar portion height of the outer collar portion;
• and
• wherein the inner collar portion configuration is defined at least in part by an inner collar portion profile comprising a vertical curvature defined at least partially in an upward vertical direction from a first inner collar portion end and from a second inner collar end portion to an inner collar portion peak, the upward vertical direction extending from a sole of the footwear article body to the collar, such that the inner collar portion peak defined by a maximum height of the inner collar portion is arranged along the inner collar portion length between the first inner collar portion end and the second inner collar portion end, the inner collar portion peak being disposed at least substantially above a length axis of the inner collar portion as measured in the upward vertical direction,
• wherein the maximum height of the inner collar portion is a maximum linear distance between the inner collar portion peak and a supporting surface upon which the sole of the footwear article is positioned,
• wherein the length axis is an imaginary line extending linearly between the first inner collar portion end and the second inner collar portion end.