A technical version of a simple panel-loader style backpack, with weather resistant zip closures, a lightweight frame sheet for structure, and built in laptop sleeve. Rugged enough for everyday commuting, but light enough for a weekend hike. Weather-resistant main compartment Weather-resistant exterior zip pocket (fits Pocket Organizer) Interior mesh zip pocket for keys/electronics Laptop sleeve fits up to 16" MacBook Pro Elastic side pockets fit standard 32oz water bottle Adjustable/removable sternum strap Durable Cordura, XPAC Sailcloth, or Waxed Canvas Water-resistant urethane coated YKK zippers Padded back and shoulder straps Load lifters for added stability HDPE frame sheet for structure Low front utility loop for attaching bike light, carabiner, etc. Dimensions: 11" (27.9 cm) × 6" (15.2 cm) x 19″ (48.3 cm) - (21L) Handmade in California