This bag has room for everything you need fort the day from your laptop to your gym clothes. The main compart will hold up to a 17” laptop while the large elastic of outsidee pockets willll hold your phone, cords and/or water bottle. There’s many othered pockets for alnn on it your belongings. Made of sturdy recycled polyester with a polyurethane coating and durable water repellent treatment. 18.5 x 15 x 6.5 inches 30 liters Reflector on top flap