Lock and Lock Finger water bottle.100% real lock and lock finger water bottle with cap (PP). Eco-friendly, no toxin and odor free Crystal and transparent, easy clean Strong, light and easy using. Safety cautions 1.When using the microwave, be sure to keep all of the locks open (If left locked, the product may explode due to excessive steam build up). 2.Hot food may cause air to expand and result in inferior lockage. Store food in a container after food has cooled off. Be careful especially when you open a container containing hot food to avoid burns. 3.Never store alcohol, benzene, gasoline, oil, or other volatile or flammable chemicals in your containers.