Packed to the gills with useful features and with a curved back design keeping you cool and comfortable the Berghaus Freeflow 40 Rucksack is the ideal multi-day hiking partner The Freeflow 40 rucksack keeps you cooler and more comfortable than ever with a unique new back design that maximises airflow and comfort and reduces the build-up of heat and sweat The innovative design ensures minimal contact between the pack and your back allowing significantly more air to flow and keeping your back cooler than a close-fitting rucksack So you stay cool and dry - free to enjoy your day without distraction