Nalgene atb bottle 650ml you can rely on the nalgene all terrain bottle wherever you go its great for carbohydrateenergy beverages easy to use and simple to clean fits standard bicycle cages the hinged polycarbonate mud cap keeps the drinking spout clean and the slim profile and textured grip give you firm handling in virtually all conditions the wide neck opening easily accommodates ice cubes for chilled drinks and the neck configuration works with most major water purifiers and fi