During a long trail you don't want to doubt your nutrition. You want a gel you know, that fits easily in your vest and that you can grab at any moment. That's exactly why we carry GU at Trail.NL.
GU makes small gels in lots of flavours, with and without caffeine. The Roctane line adds extra sodium and amino acids for ultras and long, hard days. With the Hydration Tabs you top up fluid and salt along the way.
For us GU is above all a trusted choice: plenty of variety in flavour, easy to dose and a brand that has been making gels for endurance athletes since the early nineties.