The whole world is struggling with heat every summer due to the global warming.
You could drink cold water from the refrigerator at home, but when going out, you are in a great need of the outdoor water bottle to drink cold water for the day time.
The existing outdoor vacuum flasks or stainless thermos are heavy, expensive, inconvenient to carry around and difficult to store.
However, our portable water bottle called 'Secret'is multi-purposeful.

1. At home, it could be used as 1,000ml plastic water bottle in the refrigerator.
2. When going out of home, just put in a frozen 500ml plastic bottle into the Secret' fastening the two by the neck.
3. Hereby used frozen 500ml bottle is the general water bottle which could be bought from any kinds of mart.
4. The portable water bottle 'Secret' is manufactured by the eco-friendly materials such as PET, PP, and PE.

This product has 'Killing two birds with one stone' effect.

1. The portable water bottle 'Secret'. price is reasonable, the weight is light and last but not least, it's handy.
2. It is distinctive visually, psychologically, and palately(Three levels) to feel the coolness
3. you could use any kinds of 500ml water bottle bought from the mart, and change it everyday with out burden. Plus, even if you don't change the inner bottle and use it for several times, it contributes in solving envir on mental pollution problems.
4. Moreover, people struggle against obesity while eating frozen desserts in summer, so this cold portable bottle could help prevent obesity as well.

How to Use

This portable water bottle 'Secret' is reasonable in price, light in weight, and is always possible to see its contents since it's transparent.

• Secret is the world's first double plastic water bottle which could keep water cold & warm for about 8~10 hours maximum.
• You would certainly realize the Secret is need whenever you are exercising, hiking, fishing, enjoying water activities, or having family picnics etc.

Invention was focused on preventing inconvenient frost when freezing the plastic water bottle

When going outdoor in a hot summer day, you are in a great need of the frozen plastic bottle (in order to drink cold water.)

However, anyone would have experienced unpleasantness when the frozen ice bottle melts as a result of dew condensation. The hand as well as its the surroundings are wet with its frost. As a matter of course, I came to invent the new water bottle in which the frost would not melt directly into its surroundings.

Secret was invented on preventing inconvenient dew condensation when using frozen plastic water bottle. By solving such problems, this portable water bottle is the world's first outdoor vacuum flask (PET), registered as patent.

The existing outdoor vacuum flasks or stainless thermos are heavy, expensive, inconvenient to carry around and difficult to store. However, our portable water bottle called Secret is multi- purposeful. Since it's transparent, you could see its contents(ice) and feel the coolness visually, psychologically, and palately in all three levels. Moreover, the price is reasonable, the weight is light and last but not least, it's handy.

Particularly, you could use any kinds of 500ml water bottle bought from the mart, and change it everyday without burden. Plus, by drinking cold water, you could control obesity since it keeps you out of the carbonated beverages. This product has 'Killing two birds with one stone' effect.