Nalgene Tritan Wide Mouth Glow 1L - Green GlowNalgene's iconic water bottle has been given a clever makeover, made from a material that can glow in the dark it's not quite opaque, so the waterline is still visible. The large wide mouth opening easily accommodates ice cubes, fits most water purifiers and filters and makes hand washing a breeze. It has a secure loop top lid and includes printed gradations to help measure liquids accurately.