Each tube has a capacity of 89mL, making them suitable for travel, including air travel, as they meet most airline liquid restrictions. These travel bottles feature a smooth touch finish, providing a comfortable grip, and a removable flip-top cap that makes it easy to squeeze out and refill thicker products like moisturizers, shampoos, and conditioners. The compact size and user-friendly design make these tubes ideal for packing in your carry-on or travel bag.