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.FeaturesFluxRing hard anodized aluminum cooking cupFlash insulating cozy with cargo pocket and heat indicatiorDrink-through lid with pour spout & strainerBottom cover doubles as a measuring cup and bowlCaon pack Sol, Flash or Zip burner base with one 100g Jetpower canCompanion cups are compatible with Jetboil systems only.