Outer: 100% fine organic bovine leather. The leather is slightly waxed, with the unique surface characteristics of the hide, such as grains, scars, and subtle color differences remaining visible.
Tunnel: 100% Dutch TenCate Cotton™ tent canvas, a robust cotton (340 gr/m²) with a water and dirt-repellent finish (40 cm water column).
Each backpack is impregnated and water-repellent.