Clean Eearth Project Travelite Refill Bottles are incredibly lightweight, completely leak-proof, and perfect for travel. They are versatile and can be used for various liquids, such as shampoo, liquid soap, lotion, and even toothpaste. And, the bottle design has countours that makes them ideal for cleaning makeup brushes. Spill-proof and leak-proof; ensuring that your product won't spill even with the lid open. With a capacity of up to 78ml, they are suitable for carry-on luggage.