Wide-Opening Feature The wide-opening design allows for easy filling and cleaning, even with thicker fluids and cleaning tools. TSA Approved These 3 oz travel-sized containers are TSA approved, making them perfect for airline carry-ons. Eco-Friendly Material Made of high-quality silicone, these bottles are eco-friendly and safe for use with a variety of liquids. Drip-Free Valve Cap Equipped with a drip-free valve cap, these bottles prevent leaks and control liquid dispensing. Leak-Proof Design The 3-layer leak-proof design ensures no liquids will spill, keeping your luggage and clothes dry during travel.