ULAC Trek Bolt-On 1.0L Top Tube Bag MSThe Trekking GT is a whole different ball game than the rest of the Nomadpak family. The GT utilizes a more advanced waterproof fabric for reduced weight (110g.). In terms of the exterior design, we've maintained the classic Nomadpak design language, with pockets on both sides you can use to store as many energy gels for time trials. We've also tweaked the form a bit to be more aerodynamic while still offering an adequate 1L of space. For