Great Messenger bag from Patagonia, the Half Mass Messenger bag is loaded with plenty of features including a seperate inner lap top sleeve.

Features:

Main compartment has removable/modular padded computer sleeve that attaches to the removable waistbelt to create an on-the-go computer sling and free up valuable space

Large elastic stuff pocket holds jacket or sweater

Padded, fully suspended computer sleeve holds 15"- 17" laptop safely above ground; internal zippered security pocket and organization for pens

Outside pocket on cover flap is accessed via water- resistant zipper

External side pocket for easy-access to water bottle, cell phone, keys or power brick

Light-colored lining makes contents easy to find

Topside carrying handle; padded shoulder strap is fully adjustable; detachable waistbelt secures bag for serious pedaling and stows when not needed; flap overlaps sides to keep out rain; reflective strip improves visibility in low light

8.4-oz 600-denier 100% recycled polyester. Lining: 3.3-oz 200-denier polyester. Both with a polyurethane coating and a Deluge® DWR (durable water repellent) finish

1020 g (2 lbs 4 oz)