Features 4-way stretch nylon / spandex fabric for supportive compression fit, comfort & freedom of movement Thin, breathable, moisture transporting material, no seam in the inner leg / knee area for more comfort when driving Narrow, perforated, open-cell Elastic Interface® padding provides cushioning, comfort & unrestricted freedom of movement on & off the bike without hindering Flat-stitched seams for increased comfort when getting on & off