Description of Nalgene 1 Pint Narrow Mouth Bottle - Slate Blue For those who prefer a roomy bottle with a smaller opening, we offer our narrow-mouth loop-top bottle. It offers all the same advantages of our wide-mouth, with a top that minimizes the chance of spills and cap that never gets lost. Printed graduations simplify the process of measuring. Features: Extremely durable Resistant to staining Resistant to retaining odors Recommended for "extreme" adventures Dishwasher Safe (top rack only) Withstands temperatures from -135ºC (-211ºF) to 135ºC (275ºF) 1 pint (16oz)