"Travel size" refers to products that are specifically designed to be compact and lightweight, making them convenient for travelers. These items typically adhere to regulations set by airlines and other transportation authorities, which often limit the size and volume of liquids and gels that can be carried in carry-on luggage. Common travel size products include toiletries like shampoo, conditioner, and toothpaste, as well as snacks and other essentials. Travel size products are usually sold in smaller containers, often 3.4 ounces (100 milliliters) or less, allowing for easy packing in luggage or backpacks. Many brands offer travel size versions of their popular items, making it easier for consumers to maintain their routines while on the go. This category of products is especially popular among frequent travelers, such as business professionals and vacationers.