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The Nau Envelope Courier Pack ($240) is ideal for bike-riding individuals – and also for those who aren’t. You can secure the bag on your bike rack for a smoother ride via the bag’s hooks. For non-bikers, commuting is made more comfortable with the Envelope Courier Pack as it also designed to strap perfectly to your back. The roll-top bag is made from wool felt and recycled polyester, making it perfect for carrying your laptop and other belongings.