Patagonia Yerba (Black)

This 2015 Yerba has been revised and offers just a bit more volume than before: 24 liters instead of 22.  It's a single-compartment, streamlined top loader that provides easy zip access to the main compartment so you can get to your gear quickly.
Watch this Patagonia Yerba video on YouTube.

The Yerba is a cleanly designed 24 liter daypack that has the room & features to hold a day's worth of goods when you hit the trail, bike path or subway. It's single compartment accommodates reading materials, lunch and a jacket; inside, a raised, padded sleeve with buckle closure holds most 15-inch laptops.

Air Flow mesh shoulder straps (with adjustable sternum strap) and Air Flow mesh, padded back panel prevent overheating 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).
Stretch-woven side pockets accommodate a full range of water-bottle shapes and sizes.

• Made of a 420-denier 100% recycled plain weave polyester, Deluge® DWR (durable water repellent) finish, YKK zippers
• Generous main compartment with dump pockets for quick organization on the go
• Interior 15˝ padded sleeve is raised off the ground to protect laptops from impact; sleeve secures with a buckle closure and doubles as a hydration bladder holder complete with tube port
• Main compartment front side pockets hold electronics and supplies
• Exterior stash drop-in pocket for quick access (non-zippered, 18cmx28cm)
• Lid/toppocket with zipper, holds e.g. Ipad mini (20cmx25cm)
• Stretch-woven side pockets accommodate a full range of water-bottle shapes and sizes
• Air Flow mesh shoulder straps and back panel; adjustable sternum strap
• Back panel length: 45cm. Width: 28 cm. Depth: 20 cm.