12 liters (3.7 gallons) of water capacity provides ample storage for multiple showers or extended use between refills. Key features and benefits - Large capacity for fewer refills: The 12 L / 3.7 gal bag lets you shower several times or enjoy longer rinses without frequent reloading. - Adjustable shower head with practical flow control: The shower head includes an adjustable flow control valve; flip it up to maintain a steady water flow and keep your hands free. A built‑in one‑way check valve prevents water from flowing back into the bag, helping preserve water quality. - Independent manual pump: Operates without electricity or batteries. The self-contained manual pressure pump lets you shower anywhere, anytime, without external power sources. - Visual water level indicator: A clear gauge lets you easily monitor the remaining water, enabling proactive refills and efficient water use. What you can do with it - Car camping and RV trips: Stay clean on extended trips without relying on external water sources or power. - Backcountry adventures: Shower on multi-day hikes or camping trips where portability and self-sufficiency matter. - Boating, fishing, or emergency readiness: Use in boats or during emergencies where power is unavailable, while keeping water usage predictable. Technical highlights - Capacity: 12 liters (3.7 gallons) - Duschkopf features: adjustable flow control and flip-up valve for hands-free operation - Backflow protection: one-way check valve prevents water from returning into the bag - Pumping system: manual pressure pump, no electricity or batteries required - Water level monitoring: visible indicator to manage refills and water usage This description retains the original product’s functions and capabilities while presenting clear, customer-focused benefits and practical usage scenarios.