With a single compartment that accommodates reading materials, lunch, and jacket, the Patagonia Yerba Pack daypack carries your essentials from the bus to the trail. The backpacks padded sleeve is raised to help protect up to a 17-inch laptop from drops. A zippered microfleece-lined top pocket holds an audio device or sunglasses, a stash sleeve stuffs a shell, and dual stretch-woven pockets carry water bottles. Shoulder straps are made with airflow mesh to keep you cooler in the heat. For day hikes, leave the laptop at home and slip a hydration reservoir in the computer sleeve, which comes with a tube port. A lanyard secures your keys and an internal organizer holds pens and other small items. Made from tough but supple 420-denier 100% nylon oxford plain weave with 840-denier 100% ballistics nylon reinforcements. The lining is 200-denier 100% polyester. All fabrics have a Deluge DWR (durable water repellent) finish.