9mm HEX Technology contours around body, with variable size HEX pads on hips and tailbone optimizing flex and impact, for ultimate comfort, movement, and protection HEX hip and tailbone pads feature newly engineered shape for more precise coverage 3/4 length coverage for lower-body protection from court surfaces and abrasions Compression technology provides support, lessens muscle vibration, and reduces muscle fatigue. 6-thread flat-lock technology for strength at the seams and added comfort