Lots of us use Platypus water bags of various sizes. I use two 2L bags for a gravity filter. After a while, even their light weight will add up.
I found some new Platypus-like water bags at the Daiso store. Right away I will say that they are not built for heavy use quite like a real Platypus. There are two models, each $1.50. One is 3.9L, and it weighs only 1.13 ounces. The smaller one is 1.2L, and it weighs only 0.74.
Here are a few gems that I gleaned from the product package warnings once I got past the Japanese characters:
* It can be folded and carried conveniently after using it. When it is empty, fold it to carry.
* Freeze with water in the refrigerator.
* You can get broken ices by cutting the body of the frozen bag.
* Disposable for outdoor sports and hiking.
* Keep away from fire.
* Avoid keeping beside of sharp stuffs as they may leave scratches on the product.
* Well wash before using.
* Do not fully fill water when you freeze it.
* Do not fill it with the diluent, gasoline or alcohol etc except for water. It may cause deterioration of the item.
* Do not fill it with hot water.
* Do not carry it for a long time, when it contains water.
* Use it only for its intended purpose.
* Do not use it in microwave.
–B.G.–


