Idris 25L is a 25-litre ultra marathon backpack inspired by legendary ultra marathons like Marathon des Sables. It balances comfort, weight and capability with enough space for kit for a lightweight overnighter.

It's made for longer trips where you need to carry more in a race-vest fit - perfect for moving freely and quickly. The 25-litre capacity is expandable thanks to the roll-top closure; this keeps kit secure as you chew through food and swap layers.

We've a history of working with some of the best ultra runners in the world so we've been able to add the features that matter and leave out the ones that don't. It's treated with a PFC-free DWR giving protection if you get caught in a passing shower.