The FERRINO ZEPHYR is a 17 liter backpack that can be extended up to 20 liters. Multifunctional, it can accompany you in many sports disciplines, from trekking to running, also excellent for mountain biking.
The ZEPHYR backpack is very breathable in the backrest area thanks to the mesh that embraces a flexible steel structure (Hollow Back System), which in turn distributes the weight load evenly.