This Mountaintop 40L lightweight hiking backpack for men and women is crafted from water-repellent 400D polyester and fitted with reliable Ykk zippers. It comes with multi-compartment storage that can hold a 16-inch laptop and daily essentials. Breathable mesh structure with sponge padding and a whistle chest clip deliver all-day carrying comfort. Equipped with a dedicated water bladder compartment, it is perfect for various outdoor activities and an ideal gift choice.