Durable 4-way stretch Poly / Spandex In-Motion chassis construction allows unrestricted body mobility Taped interior sewn seams for extra durability with less skin irritation Laser cut perforation vents for increased air flow Minimal seam chassis design for maximum stretch performance and comfort TPU knee protection overlays Moisture wicking material properties keep the body cool and dry Sticky silicone printed inner waist keeps jersey in place Zipper-less waist opening for maximum comfort with reduced weight Precision-fit, ratchet waist closer system Durable full grain leather inner knee grip panels Athletic fit