CX Pro Custom Unisex Short Sleeve Jersey Properties: breathability | perfect fit. Usage range: 20 °C to 38 °C. GRS: Gobik Retention System. Version: unisex. A jersey with a perfect fit. This is an ultra-lightweight, very tight-fitting, and highly breathable jersey that feels like a second skin. Its combination of four different fabrics makes the CX Pro a technically advanced garment. Designed to support an aggressive riding position, it delivers maximum aerodynamic performance. On the back, it features three reinforced angled-cut pockets with the innovative patented GRS – Gobik Retention System, providing extra security for your valuables.