Perfect for the top tube. The Xlab Rocket Pocket XL is a molded bag and is the extra large version of the Xlab Rocket Pocket, sitting at 3.6 inches tall. It offers insulated sides, keeping your nutrition cooler. Using the Xlab Rocket Pocket drag is actually minimized, caused by stem and headset spacers. The XLab Rocket Pocket has a tapered aero design, with slim slides for clean airflow.
Actually reduces drag caused by stem and headset spacers.
Non slip surfaces underneath and on front of bag grip top tube and back of stem.