Platypus duolock softbottle 2.0l - Platypus DuoLock SoftBottle

I love this water bottle. It allows you to carry up to 2.5L of water, but if you want to carry less, you don't have to carve out 2.5L of space in your bag. backpack. It also shrinks as you drink it, which is great for activities like skiing, where you are often trying to put more layers into your pack as the day goes on. My first one lasted about 5 years of heavy use, which might not be quite as long as a hard bottle, but is still quite good value. My only advice is to color the cap, especially if you use the bottle for snow activities, because if you drop the cap, you will never find it again in the snow.