Outland USA says:
Need an extra cup? The 1 Liter Short FluxRing? enabled cup offers cross compatibility and flexibility.FluxRing? technology makes it possible to heat a conveniently shaped vessel with extremely high efficiency. This patented technology captures the heat of the burner and directs it into the contents of the FluxRing? cup, rather than into the air as waste.
Accessories: Jetboil Grande Silicone Coffee Press,
Historic Range: $35.85-$54.95