Pack compatibility:
All models and sizes.
 
This option will add a zippered pocket to the roll top of your pack. The pocket measures 11"X6" and comes with a waterproof zipper closure. This is a great feature for adding an additional bit of storage to your pack. Great for storing small items such as a headlamp, wallet, snacks, etc. This inlcudes a key hook on the inside of the pocket. 
 
This option will add about 1oz to overall pack weight.