This is the sweet spot: the tee is still comfortable, but maybe it's a bit faded or the fit has changed. In Florida, you might want to swap a heavy GSM for a lighter one. If your current tee is 180 GSM and you're always hot, replacing it with a 150 GSM version can make a real difference.

Consider what you're using it for. If it's for lounging at home, a lighter weight feels airy. If you're going out and want structure, keep a heavier one for the evenings. The point is to match the fabric weight to your environment and needs.