The MSR Reactor 1.7L Pot is a lightweight and durable pot deigned to work specifically with the compact MSR Reactor Stove system.
MSR says:
Hard-anodized aluminum Reactor cookware features our proprietary heat exchanger that fully encloses the Reactor stove’s radiant burner. The resulting windproof design is key to the stove system’s unrivaled all-condition performance.
MSR Stove Systems integrate cookware and stove into compact and hyper-efficient units that boil water and melt snow faster than anything else in the backcountry. Unmatched, all-condition performance makes them ideal for everything from Himalayan big-walls, to alpine traverses and long-distance, low-weight thru-hikes closer to home.
Saves weight over long trips by reducing the total fuel carried apart from that the Reactor stove system boils a litre of water in just 3 mins and the wind resistant design ensures it outperforms conventional systems in poor conditions.
Individually the Reactor pots are on the heavy side - that's because of the heat exchanger they become weight efficient on longer trips of over a week where the amount of fuel saved (weight wise) is more than the extra weight of the pot.
Reactor cookware is designed to work with the standard Rector burner unit so if you've bought a Reactor System with a particular pot size you can add other pots from the cookware range.