I just received this 1.5 liter Fire Maple heat exchange kettle which I purchased on eBay directly from China. The same kettle is sold in the U.K. under the Fox Cookware brand. Here is a YouTube link to a demonstration video of the Fox version. http://tinyurl.com/k4sqhzl The lid has a lifting tab that stands up when tilted one way and folds flat when tilted the other. Handy for not burning one's fingers. The spout is shaped so the liquid pours in an even stream. There are 1 inch high heat exchange fins around the outside perimeter of the pan bottom. When placed on the stove the flames are directed up through the center hole in the bottom and out through the heat exchange fins surrounding it. The handle on the kettle has an orange plastic coating which allows the kettle to be picked up without using a pot holder even when its contents are boiling. Both the Fire Maple and my Primus Litech 1.5 liter kettles are made of hard annodized aluminum. They both have the same 6" diameter and the same lid hole size. The Fire Maple is 1 inch taller to accommodate the heat exchange fins and weighs 103 grams (3.6 oz) more for the same reason. 308 grams (10.8 oz) for the Fire Maple and 205 (7.2 oz) for the Primus Litech. My testing confirms the Fire Maple claim of 30% increased efficiency. It took 10.5 minutes to boil a liter of water in the Primus but only 7 minutes to boil a liter in the Fire Maple on a French Vesta stove under similar conditions. I prefer the black plastic handle and lid knob on the Primus to the orange handle and lifting tab on the Fire Maple mostly for aesthetic reasons and because the lid knob is less fussy than the tab. But if you're conscious of your fuel consumption or in a hurry to have a hot cup of Joe, the Fire Maple wins hands down.