The Saturn TUL-02 is made of robust, light polyethylene material and does entirely without zippers. Instead, the front panel and the main compartment are connected with rivets. The backpack opens and closes with a Fidlock system at the top – a combination of a magnetic and mechanical snap-in lock. This system allows quick and comfortable access to items inside the backpack. Another advantage of the model is its ergonomically designed back with wide, padded straps.