The R-Core X race pants are made from DWR polyester/spandex 4-way stretch woven fabric for increased comfort & a BOA Fit System dial & lace technology for a lightweight, incrementally adjustable waist closure for the ideal fit. The silicone print on inner waistband minimises slippage & laser perforations in inseam & behind the knees for increased airflow. They also feature zipper pockets for security of essentials.