Nalgene Outdoor Products - For over 30 years, Nalgene has provided the finest, most durable containers to outdoor users. The closures are “Guaranteed Leakproof” and Nalgene products have been respected and used worldwide. Proven to perform everywhere from school, the office and even the summit of Mt. Everest. Fuel for Adventure is proud to offer these fine Nalgene Water Bottles in a variety of colors and styles.