Flat Knit Stitching Technology An advanced horizontal knitting technique allows for customized stitching to achieve 3D shaping of the fabric, providing optimum fit. Contours to your calf area, providing optimum support. Medical Application Recommended use for minor to moderate calf tightness and strains. Design Theory Breathable, multi-directional stretch allows full range of motion while maintaining high level support. Click here to see Product Video.