Transporting frozen BM

Kat

Hey mama's I need some advice. I'm getting ready to stop pumping so I'll be using my freezer stash of BM. Normally when I travel I just pump and take the fresh expressed BM which is good room temp 4 to 6 hours. So I never worry about bringing frozen. My question is what is a good way to transport it without bringing a cooler full of ice? Or is that what I'm going to have to do every time? Cause that really sucks 😅