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