Wide opening: More than double the opening of competitior bottles that allows for a mess free pour that prevents any waste. TSA Approved: 3.4 oz (100ml) small and portable great for use when travelling on vacation or business trips. Leakproof design: The bottle mouth locks into place with the cap that seals tightly and perfectly without any fear of leakage. High quality: This bottle has been designed with many test for optimal performance. The bottle is very durable and has a flip cap for easy use.