Tucano Marte Gravity is a great backpack for 15.6-inch laptops and 16-inch MacBooks. It features Tucano's Anti-Gravity System, an elastic suspension in the shoulder straps that reduces the weight on your shoulders and back as your body moves. The Anti-Gravity System not only improves your posture and reduces strain but also particularly decreases stiffness in your back and neck muscles by evenly distributing the weight of the backpack between your shoulders and hips. The Marte Gravity is made from high-density fabric and is well-equipped both inside and out. The especially spacious main compartment includes two padded sections for laptops and tablets, ensuring good protection. The front is equipped with several pockets of varying sizes with zippers. Two side pockets provide the perfect space for storing a water bottle and an umbrella. The back is ergonomically shaped and features padded shoulder straps with a suspension system, a trolley strap, and a security pocket. A removable rain cover, hidden in the bottom, allows you to carry your backpack even in wet weather.