It's made of a strong and efficient material: 420D Nylon.
420D Nylon is known to be waterproof and corrosion resistant.
The probox contains suspension bars that can support up to 23kg maximum. They are made of metal and the joints are made of PVC. PVC is resistant to aggressive agents and climatic variations, it is waterproof and insulant.
The structure is stable and strong.
The interior is made of mylar fabric with a reflectivity of 97%.