Patagonia Arbor Zip Pack in Blue. This simple and durable backpack features a spacious main compartment, utilising a clamshell-style opening for quick and easy access and to avoid things falling out. You\'ll also find a padded laptop sleeve designed to hold 15\" laptops for that extra bit of practicality. Patagonia have ​ensured this bag is made from 100% recycled polyester, meaning it is hard-wearing for frequent wearers, making it the perfect companion for your day-to-day life.