This bag has 2 compartments. one is front and one main compartment which has a laptop sleeve. You can easily keep 15.6" laptop and accessories. Apart from this it would have enough space to hold other items as well. So you can easily use this bag for office purpose, college or going for trip for 2-3 days. It has bottle holder at one side only. This bag does not have any secret pocket and does not come with any rain cover. Color is different than the picture. You can say it teal bt for me it i...