Innovative lightweight and durable backpack with sophisticated rear part. It can be purchased including a reliable water reservoir Microban with a large filling opening and a replaceable mouthpiece. The volume of the bag is 18 liters, volume of the water reservoir is 2 liters. It includes an integrated rain cover in bright orange color with a big reflective logo. It has asymmetrical placement of zippers and straps for better ergonomics. There is also a soft pocket for mini iPad or tablet, MP3, glasses, air pump and a special holder for helmet.