This is a DaKine backpack. It's quite waterproof, so you can use it without worry in bad weather, making it useful for outings. Perfect for marine sports and outdoor activities near water. Pockets on both sides for water bottles. Lower pocket can fit a U-lock for a bicycle from the outside. There are 4 inner storage pockets, which is convenient. ◾️Size: Please refer to the images. ◾️It can fit a 17-inch laptop, so it can also be used for everyday use in town. ◾️Features ・Removable waist belt ・Rain-resistant construction ・Perforated EVA back panel