Liter Pouch Plus.
Sized to carry a one liter, wide mouth Nalgene bottle, you'll find this pocket is ideal for multi-use as well. Solid, secure carrying of gear without any chance of losing the contents, yet quick, reliable access. 
Construction: 1,000 D. Cordura
Interior lined with padded 420d pack cloth.
Dimensions: 10.5" tall x 3.5" wide x 3.5" deep
Base Price $49.00