The Water Bottle Ice Tray by W&P makes five 6" ice spears that fit perfectly in most water bottles. Besides keeping your water nice and cool all day, ice spears are a great way to add a little flavor boost to your H20, by adding in a dash of citrus, tea, or other favorite flavor before freezing.
Other fabulous features include a lid that prevents unpleasant freezer flavors from entering your ice cubes, as well as a sturdy internal stainless steel frame that helps the tray keep its shape and prevent water from spilling while transporting your tray from sink to freezer