The large main compartment of 20 litres with inner lining which can accommodate laptops and tablets up to 15". Smaller compartment of 5 litres in the top of the bag. The backpack is equipped with a helmet carrier that can be folded away and stored in the front of the bag On the back, the bag has the option to place an optional back protector for extra protection. In the bottom of the bag is a silver rain cover with Momo logo that can be stretched over the bag to make the backpack waterproof. straps are provided with an adjustable chest closure for extra stability.