"Carry everything you need for shorter training runs and races with the RACEPAC 4. Holding up to four litres of fluid, kit and nutrition, this pack is ideal for shorter trail races up to half marathon distance. The RACEPAC 4 can comfortably fit two 500ml soft flasks in its front pockets, or a two-litre hydration reservoir in its main rear compartment (flasks and reservoir sold separately). This same rear compartment can hold kit and nutrition too, with or without a reservoir in there. Keep your valuables and essential kit/fuel to hand with three quick-access pockets on the front of the vest (one of which is zipped). Thoughtfully designed, these pockets allow you to easily get to that gel, or pull your phone out for that summit selfie! The pack's breathable air -mesh inner works hard to wick away sweat, keeping you comfortable during your run. All of the main materials of the RACEPAC 4 contained recycled content. The RACEPAC 4 comes in a single size, with side adjustment straps and a bungee chest strap allowing you to find that perfect, zero-bounce fit. There are also pole attachment straps on the front of the pack, for those hillier runs."