Columbia Circuit Breaker II Backpack The Columbia Circuit Breaker II Backpack is water resistant to withstand any rainy weather conditions. The Techlite straps are involved of an fiercely strong, lightweight compound molded around super-breathing mesh inserts with a large amount of cushioning with your comfort in mind. It features ventilated back draft back panel, and directional foam conduits that directs hot air out and cooler air helping you to feel comfortable at all times. Plus, this product features a 17-inch laptop sleeve to keep your computer or tablet secure. The backpack contains a compression straps giving you all of the room to crunch down the size of the pack to perfectly fit the contents in your bag safely. Order the Columbia Circuit Breaker II Backpack today!