Nalgene Wide Mouth Sustain 500ml Slate Blue Converts to backpack RF welded Thermoplastic Polyurethane (TPU)

RF welded Thermoplastic Polyurethane (TPU) and double hook-and-loop roll top construction keeps this soft case both watertight and slim

Soft-touch membrane is soft on your skin

The Ultra Adventure is updated with a slimmer silhouette and fun technical details like our Reverse Split Brim™ and Sunglass Lock™

Hidden zip security pocket

Nalgene Wide Mouth Sustain 500ml Slate Blue Converts to backpack RF welded Thermoplastic Polyurethane (TPU)A compact classic with an eco conscious edge. The Nalgene Sustain Wide Mouth 500ml bottle delivers trusted performance in a smaller, streamlined form perfect for travel, daily use, or throwing in your pack for lightweight adventures. Crafted in the USA from 50% recycled plastic (ISCC certified), this BPA BPS free bottle helps reduce landfill waste and lowers carbon emissions, without compromising on strength or durability. Designed to be leak proof,