We couldn't make filtering water with the GravityWorks System any easier, so we made it smaller and lighter. The GravityWorks 2.0L system holds up to four liters (depending on configuration), is light weight and packs small, making it ideal for 1-4 people in the backcountry. Two kits and a range of accessories allow both filtering and backflushing with whatever you like to drink from, plus these great benefits: