Nalgene All Terrain Bottle
Here's what other sites are saying:
You can rely on the Nalgene All-Terrain Bottle wherever you go. It's great for carbohydrate/energy beverages, easy to use, and simple to clean. Your ATB fits standard bicycle cages, waist packs and backpack pockets. 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 filters.