The evoc fr lite hydration backpack less is more the fr lite is slim extremely lightweight and flat and yet much more than a back protector with its effective 10 litre capacity this model is the smallest among the evoc back protector backpacks for bike parks rides around the neighbourhood or competitions evoc fr lite hydration backpack features lightweight protector backpack reduced to the essentials ce certified according to en 1621 2 accommodates hydration systems up