Agave Laptop Backpack Black. The JanSport Agaveâ??s versatile design features an internal sleeve that can easily hold a 15â?? laptop for when on campus or at school. Or for the weekend hiking trips it can be used for a 3 liter hydration bladder. Two large main compartments give the backpack maximum storage. The padded, breathable AirCore shoulder straps and mesh back panel provide a comfortable carry for any trail or commute.