This Mountaintop 40L lightweight backpack is designed for men and women, ideal for hiking, camping and travel. Made of water-repellent 400D polyester with reliable Ykk zippers, it features a 40L multi-compartment space that can accommodate a 16-inch laptop and daily gear. Breathable mesh padding and a whistle chest clip bring all-day comfort. It also has a dedicated water bladder compartment, making it a practical outdoor companion and a wonderful gift choice.