The classic 32 oz. Nalgene Bottle with the NOLS logo. BPA Free, with the NOLS logo on one side and the seven Leave No Trace principles on the other.
Full sized Nalgene Bottles are commonly used to carry drinking water on NOLS courses.
NOLS 16oz Nalgene
NOLS Wilderness Medicine 16oz Nalgene
NOLS Wilderness Medicine 32oz Nalgene