1.5 Litre capacity. Spray to drink. Spray to cool. Spray to share. Spray to clean. Spray to filter. Plug and play adaptors or the drinking tube and the pressurization tube allows the engine to be easily removed from the pack for cleaning and refilling. Large slide top allows the engine to be easily cleaned, dried and refilled. If handled with care, the engine can be turned inside out for cleaning and drying. Don't forget to buy your filter. Your reservoir is filter ready.
Don't forget to buy a filter. This reservoir is filter-ready. Also, you may want to consider buying a bulb holder if you are retrofitting to another pack -- not required, but nice to have.