Three-dimensional channeled fabric structure for garments and/or footwear

A three-dimensional knit spacer fabric having an upper surface and a lower surface, wherein the upper surface of the knit spacer fabric comprises a plurality of parallel channels and ribs, wherein the knit space fabric comprises:

• a first knit layer forming the upper surface of the three-dimensional knit spacer fabric structure, wherein the first layer comprises a plurality of parallel spaced apart fabric strips which form the ribs in the knit spacer fabric, wherein the fabric strips have a width of between about 2 and 6 millimeters, and wherein the first layer comprises a plurality of yarns that are napped forming a first fleece, wherein the plurality of yarns of the first layer comprise wool;
• a second knit layer forming the lower surface of the three-dimensional knit spacer fabric structure, wherein the second layer is a continuous fabric layer, and wherein the second layer comprises a plurality of yarns that are napped forming a second fleece, wherein the plurality of yarns of the second layer comprise wool;
• and,
• a spacing layer that interconnects the first knit layer and the second knit layer, wherein the interconnecting of the first layer and the second layer forming a plurality of parallel channels, wherein in a plane oriented substantially perpendicular to the plurality of ribs the channels of the spacing layer have a substantially “U” cross-section and the spacer layer has a plurality trapezoidal cross-section shape, wherein each trapezoidal cross-section shape comprises a plurality of pile yarns, wherein the top of each trapezoidal cross-section shape corresponds to the ribs in the first knit layer, wherein the channels have a width of between about 2 and 8 millimeters, and wherein the spacing layer has a thickness of between about 2 and 8 millimeters.