I bought this together with a new steam iron. We live in a hard water area and hope this will prolong the life of my iron. It poors well, but wish the top reservoir was a bit bigger.

Far better than buying deionized water from outside.

Only spotted this after buying an iron and it was included in the Points Boost so decided to purchase along with spare cartridge. Although the initial outlay is expensive, if it improves the irons life and efficiency, it has to be worth it.