An article of apparel, comprising: a garment structure (1200; 1300; 1500) for a human foot, wherein the garment structure includes one or more fabric elements, and wherein the garment structure includes an arch portion that is structured and arranged so as to provide a close fit to and completely contain an arch area of a wearer's foot; and a foot position feedback system (1202; 1302; 1502) integrally formed in the garment structure at the arch portion, wherein the foot position feedback system includes: (a) a first region (1206, 1208; 1504) that extends across the arch portion from a medial side of the garment structure, across a footbed portion of the garment structure, and to a lateral side of the garment structure, wherein the first region has a higher compressive force application capability than a compressive force application capability of the fabric element making up a largest proportion of the garment structure; and characterized in that the foot position feedback system further includes: (b) a second region (1208; 1306; 1504) that extends across the arch portion from the medial side of the garment structure, across the footbed portion, and to the lateral side of the garment structure, wherein the second region has a higher compressive force application capability than the compressive force application capability of the fabric element making up the largest proportion of the garment structure. a garment structure (1200; 1300; 1500) for a human foot, wherein the garment structure includes one or more fabric elements, and wherein the garment structure includes an arch portion that is structured and arranged so as to provide a close fit to and completely contain an arch area of a wearer's foot; and a foot position feedback system (1202; 1302; 1502) integrally formed in the garment structure at the arch portion, wherein the foot position feedback system includes: (a) a first region (1206, 1208; 1504) that extends across the arch portion from a medial side of the garment structure, across a footbed portion of the garment structure, and to a lateral side of the garment structure, wherein the first region has a higher compressive force application capability than a compressive force application capability of the fabric element making up a largest proportion of the garment structure; and characterized in that the foot position feedback system further includes: (b) a second region (1208; 1306; 1504) that extends across the arch portion from the medial side of the garment structure, across the footbed portion, and to the lateral side of the garment structure, wherein the second region has a higher compressive force application capability than the compressive force application capability of the fabric element making up the largest proportion of the garment structure. (a) a first region (1206, 1208; 1504) that extends across the arch portion from a medial side of the garment structure, across a footbed portion of the garment structure, and to a lateral side of the garment structure, wherein the first region has a higher compressive force application capability than a compressive force application capability of the fabric element making up a largest proportion of the garment structure; and (b) a second region (1208; 1306; 1504) that extends across the arch portion from the medial side of the garment structure, across the footbed portion, and to the lateral side of the garment structure, wherein the second region has a higher compressive force application capability than the compressive force application capability of the fabric element making up the largest proportion of the garment structure.