These HDPE (High Density Polyethylene) tanks from Speidel are a great choice for both fermentation and storage. The heavy duty containers are much thicker than traditional plastic carboys and have a host of unique features which really improve usability. Among these features is the oversized top opening which makes them easy to clean, the spigot eliminates the need to siphon and the handles make them easy to move even full.  The high density construction is highly resistant to oxygen pickup, making these suitable for long-term aging of wines up to 12 months.