Hydrapak SEEKER 3L + Camp Tap + Plug-N-Play Cap Used only once for camping, but in good condition. *From the manufacturer's website: An ultra-lightweight and durable water storage bag. Features a weather-resistant, easy-pour handle. Two side lash points allow for versatile use, such as hanging or attaching to a backpack. Folds down extremely compactly and can be frozen. The cap has a loop to prevent it from getting lost. The 42mm cap diameter is compatible with various water filters, making it ideal for long-term and extended use.