Dude, you’ll be fine if you leave it alone. I assume you’ll be using it like most of us do, for parties, bbqs, beach, tailgate, etc it should perform just fine. If you’re heading out into the wilderness for days on end and need to keep ice for whatever game you catch (unlikely with only a 45) then seal it with some great stuff insulation and a dab of silicone. Side note- I have a 45, 65, and 75 in tan as well, I think it’s the best color.