An all-new comfortable handle allows for true one-handed filling. This easier-to-fill design is also easier to carry and pour An all-new compact bite valve preserves excellent water flow in a smaller package. Equipped with a new on/off lever that is thumb-operable and easy to regulate with one hand A brand-new compact Slide-Seal opening allows for one-handed filling, removes bulkiness, slides into packs easier and seals securely. Our new HydraClip reservoir attachment seamlessly integrates with this new opening design All parts in this system, including the magnet, sternum slider and sternum buckle, have been updated to ensure a more secure hose capture