The Timbuk 2 Especial Cuatro Backpack is designed to pack it in, while keeping the elements in check. Ever thought about carrying a bike while riding a bike? The secondary strap on this pro-level bag can do all that and more, with room to spare. And while your testing the limits of your pack mule capabilities, your bag's ventilated Backbender flexible cooling panel will keep you from getting overheated. Now that's teamwork.
Backbender flexible cooling panel for superior ventilation and comfort. Air jet textured for high abrasion resistance and exceptional strength to weight ratio. Comfort backpack straps with hydration or headphone routing, a reflective hit and detachable sternum strap. Internal pocket sized for up to a 15'' laptop in a sleeve. Swing around back access document pocket- get in and out without having to take the bag off your back. Welded document pocket. Secondary buckle attachment point allowing you to over stuff this bag and carry everything including the kitchen sink. U lock holster which can double as a water bottle pocket. Made to customize to your load- compress for small objects and expand for large boxes and/or the kitchen sink. Highly water resistant design with waterproof zip. Bikers love the expansion. Start with a roomy 36L space and unzip the two gussets for a whopping 50L space: our largest spaced pack. Reflective hits.