New in packaging 3L capacity 17" x 7.7" x 0.4" Updates from previous version include ergonomic handle, bite valve and opening design Comfortable handle allows for true one-handed filling; it's now also easier to carry and pour from the reservoir Compact bite valve preserves excellent water flow in a smaller package; on/off lever is thumb- operable and easy to regulate with one hand Compact Slide-Seal opening allows for one- handed filling, removes bulkiness, slides into packs easily and seals securely; compatible with HydraClip attachments in Osprey packs