About the sports kettle.

Nowadays, aluminum is more popular. Generally, it is more expensive in April, May and November. Needless to say, SIGG in Switzerland is the best, followed by Lacan in Spain, but China is the most expensive thief. I know there are flying arrows, and I'm from mobile integral, so I feel ok.

In addition, at present, aluminum pots generally have internal coatings. It is strongly recommended not to eat buy buy or use aluminum. People will become stupid if they eat too much. Then there is another saying about the aluminum pot that the internal coating will fall off after a long time, although the advertisement says it won't. The advantage of aluminum is that it is light and fresh, and it is easy to burn if it is filled with hot water.

Stainless steel, I don't touch much. It won't be the kind that can be used as a cup with a lid on it. It looks heavy, but it is said that it is the safest.

In addition, I would like to remind you that beverage bottles such as mineral water bottles are generally used repeatedly, which will produce carcinogens, which is very scary. There are also all kinds of plastic sports bottles, which will age and undergo chemical and physical changes.

I suggest you buy mineral water for general outdoor sports and throw it to me when you run out of bottles. It's very convenient to use this, but as for the rest, people have different opinions.