Our Largest Daypack, The Alto 40L Pack Features Multiple Compartments And Pockets That Hold A Full Dayã¢Â€Â™S Worth Of Gear And Keeps Everything Organized And Accessible So You Can Move Freely. The Alto Houses Everything In Three Roomy Main Compartments - The Main Compartment Can Hold Majority Of Your Sizeable Items Like Books And Has A Lined Sleeve To Organise Gear. The Secondary Compartment Can Carry Additional Stuff Like Lunch And Running Shoes For Your Workout. The Third Compartment Has An Internal Organization Slot To Organize Your Valuables And Keys. A Zip Closing Front Pocket Carries Charger And Electrical Cords. 3D Airflow Mesh On The Shoulder Straps And Back Panel Prevents Overheating And Two Side Stretch Pockets Keep Water Bottles Within Reach. Padded Handle And Reinforced Haul Loop For Easy Grab