For most liquid toiletries, it's actually difficult to buy "travel size", i.e. less that 4 fl oz. But for toothpaste, this is a standard size that you normally

For most liquid toiletries, it's actually difficult to buy "travel size", i.e. less that 4 fl oz. But for toothpaste, this is a standard size that you normally buy, so it doesn't add much of a burden.