I'm currently using "The North Face Big Shot".

Specifications:
1. Weight =965g
2. Dimensions 55 cm x 34 cm x 20.5 cm
3. Fabric = 420D nylon, 1680D Ballistics
4. Sizes = One size
5. Volume = 33 liters

Features:
1. EXOLITE back panel
2. BackSaver bottom panel with compression
3. Vertical stash pockets with water-resistant zippers
4. Main compartment with elastic compression padded laptop sleeve and hydration port
5. Top-zip accessory pocket with audio port and mesh divider
6. Large secondary front pocket with organizer
7. Stowable waist belt
8. Stretch-mesh water-bottle pockets
9. Daisy chain with Hypalon reinforcement on front
10. Adjustable sternum strap with Safe-T whistle
11. Side and bottom compression straps
12. Stretch woven accessory pocket on shoulder strap
13. Reflective hits