These bottles are great for trekking or regular hiking use. They can stand up to a good bit of wear.

This bottle is great! It holds more than your usual 600 ml bottles hold and is of high quality. The color I have is blue and it is sharp. The cap seals tightly and no leaks. Great for hiking or camping or just to get the water out of plastic. Stays cooler longer too! Also great price and shipping!

I'm using these aluminum bottles to pasteurize water in the event that emergencies should cause drinking water to become scarce. I can set one in a relatively small mirrored compartment, placing it in direct sun, within only a smaller clear plastic container around the bottle. This will either cause the water to boil - or it will at least pasteurize it. I can drink from one while the other one is cooking.

This is just a small part of my "stay at home solar survival hobby." I'm also designing and building a solar oven, a solar fryer that will also power a simple vegetable steamer, and will even power a solar pressure cooker.