Lowe alpine airzone z 25 backpack description the airzone z 25 rucksack from lowe alpine is a lightweight daypack which is ideal for a huge range of activities it features the highly breathable airzone back system for comfort along with a hipbelt and sternum strap to ensure a great fit at all times there is a large zip opening to the main compartemnt which is great for getting easy access to most of your kit internal organisation pockets and an external zip pocket are great for your sma