The leak-proof design of these silicone bottle sleeves ensures that your toiletries remain contained, even under pressure.It's for airplane travel, they prevent liquids from escaping and damaging your belongings. These sleeves are also easy to clean and reusable, making them a sustainable choice for frequent travelers. Features -Color:Assorted Color -Material:Silicone -Size:6.00X2.80X2.80cm/2.36X1.10X1.10in -Spillproof: the silicone material ensures that your liquids stay securely inside the bottle, preventing any accidental spills -Convenient size: designed to be compact and easy to carry, these bottle covers are for travel and use -Extra protection: the sleeves provide an additional layer of protection for your bottle caps, reducing the risk of damage -Wide compatibility: suitable for various types of liquid containers, making them a versatile addition to your travel essentials - : made from durable silicone, these bottle covers are built to last and can be reused multiple times Package list: 4 bottle protective covers