The Chest Pocket gives you quick and easy access to your soft flasks while in action. The pocket can be used on the NDM 1 harness system and is built to carry the soft flasks up to 600 ml. The pocket is approximately 17 x 8 x 8 cm. in size. This product is compatible with the following models: MOTO Hydro. MTB Hydro. Airborne. Ranger. Vertical. Patriot. Outlander (NOT compatible with Outlander PRO).