Using this hydraulic reservoir is a breeze. First, open the filling port and pour in the fluid gently. Make sure it's not overfilled to avoid spills. When you're ready to use it, attach it to your pack's hydration sleeve, either internally or externally. The lightweight design makes it easy to carry around all day. To keep it in good shape, after each use, empty any remaining fluid and rinse it with clean water. Let it dry thoroughly before storing. Avoid exposing it to extreme temperatures as this could damage the reservoir and the backer plate. Also, don't put sharp objects near it to prevent punctures.