No-drip valve: The bottle cap features a no-drip valve that prevents leaks and makes sure you always dispense just the right amount. Wide opening for filling and cleaning: Unlike most travel bottles, this one is wide opening makes it easy to fill with thicker fluids, and it easily fits a brush to clean the inside of the tube. Food Grade BPA Free Silicone Designed with safety first and convenience a close second. Our silicone travel bottles are made of BPA free food grade silicone, making it safe for other liquids like sauce, salad dressing or even baby food. TSA Airline Carry on Approved: Set of small bottles, perfect for shampoo, conditioner, body wash, lotion and more. 3oz TSA Airline Carry on Approved: Set of small bottles, perfect for shampoo, conditioner, body wash, lotion and more.