The first zone, at the lower part is the most compressive one. It favors a good blood flow towards the superior part of that muscle. The middle part of the thigh, slightly less compressive continues the effort initiated by the lower part. The third compression zone, at the hips helps sustain the body for maximum comfort and has a minimal compression. Research has shown that some muscle groups need little compression to favor blood flow. All this, combined to a seamless fabric and our top of line chamois offer a high-performance bib that improves comfort for even the most demanding riders.