For hut-to-hut hiking across the warmer months, the AirZone Trek 45:55 makes a first-class choice. Featuring Lowe Alpine’s AirZone+ adjustable carry system and FormKnit technology, it takes comfort and breathability to new levels. For optimal temperature regulation, the seamless ventilation mesh is body-mapped to the high-sweat areas. Designed with overnight hiking in mind, the internal divider aids organisation in the main compartment, and if you run out of room, the lid can be extended to increase capacity from 45 to 55 litres.