For those who prefer a roomy bottle with a smaller opening. This bottle has all the same advantages as Nalgene's Wide Mouth bottle with an opening that minimizes the chance of spills.
It's design appears simple but there are over fifty years of manufacturing experience that go into creating a super durable, Leakproof bottle that is guaranteed for life.
Graduations help you keep track of your fluid intake.
The attached loop-top never gets lost and screws on and off easily.