Traveling thirst quencher. This comfortable hydration backpack is made with eco-friendly bluesign certified primary material and features a long-lasting, easy-care Aquarius (2 litre volume) hydration system. Count on carrying comfort with our F.L.A.S.H. shoulder strap adjustment and Aeroflex mesh back that even keeps a fully extended hydration reservoir at a comfortable distance from your back. The 6 liters of carrying capacity are enough for routes requiring small loads, but can be expanded by 3 litres if needed. Made from sustainable materials.