【27L with Dual Compartment】Outer Dimension: 50 x 32.5 x 21.5 cm; Inner Dimension: 48.5 x 31.5 x 20.5 cm. Top compartment, can hold 1 camera + 5 lens easily. Lower Compartment Max hold 1 camera + 4 lenses or 6 prime lenses. Accessory shoulder bag can hold 1 camera + 2 lenses. 【QUICK SIDE ACCESS & DEDICATED LAPTOP COMPARTMENT】The large camera bag with side access compartment allows for reaching the gear in a short time without taking off the big camera backpack. Dedicated back computer sleeve fits up to 15.6 inch thin laptops. 【SHOCK-PROOF & ABRASION- AND WEATHER-RESISTANT】Thickened protective pad inside, shockproof and no deformed help protect your camera & lens safety and security. High density nylon which boasts anti-tear and water resistant properties, all weather protection with waterproof raincover. 【ERGONOMIC BACK-SUPPORT】Rear padded air mesh panel and ergonomic design increase airflow while hiking or traveling and distribute the weight evenly to add comfort and save energy especially use this hiking camera backpack fully loaded on the go. 【OUTDOOR PHOTOGRAPHY FRIENDLY】 Made of water repellency and high strength tear-resistance nylon, this large camera bag is sturdy and durable, attached an extra rain cover for this outdoor photography backpack keeps rain and dust out.