nostr:npub1w8hfuwwhaum7k3kc3ruc5xsqrqsszmuunzyyr8t9gpn6tza68vxsmqwwdw belts do not retain the shirt from becoming untucked, they do not retain tension, they fail all the time and allow you to look frumpy.
simple garters as shown do not fail and hold tension, making the shirt remain tucked and flat