Benefits of 3D Flat stitching technology: Flat Knit, an advanced horizontal knitting technique, allows for customized stitching to achieve 3D shaping of the fabric, providing optimum fit.Contours to your knee area, providing optimum support.Allows full range of motion while maintaining high level support.Medical grade compressionBreathable, multi-directional stretchNon slip gel prevents migrationRecommended use for indications of tendinitis, patellar (knee cap) pain/tracking, arthritis, minor soft tissue tears/strains, general knee pain. Size Chart Measure circumference just below patella (knee cap).