Nalgene Narrow Mouth Bottle 32oz Gray 32oz. They are great for bringing along to the gym or on a hike. The Narrow Mouth is perfect for hydration in motion. All of our bottles are BPA/BPS free. Our new Nalgene Sustain product line is made from material derived from 50percent waste plastic (using ISCC certified mass balance) further offsetting the use of fossil fuels and lowering greenhouse gas emissions. Specifications for Nalgene Narrow Mouth 1 Quart Sustain Water Bottle: Manufacturer: Nalgene Fabric/Material: Plastic Volume: 32 oz Application: Outdoor Height: 8.25 in Weight: 6.25 oz Capacity: 32 oz Hydration Cap Type: Sport Cap Package Contents: Nalgene Narrow Mouth 1 Quart Sustain Water Bottle Nalgene 2021-0432: Narrow Mouth Bottle 32oz Gray 32oz