Just like the Hemsworth brothers, no one could blame you for confusing these spectacles with their sibling. They look the same & do the same job. It's just that one of them is slightly bigger. The 7224 has a slightly larger lens for a wider eye & longer arms for a more relaxed fit. Choosing between the 7222s & 7224s, is a bit like choosing between Chris & Liam Â- you're going to be happy either way. They're both good looking & will perform well; it's just personal preference. &, ultimately, no one's going to know which one you went for anyhow.