I don't really use them for camping - but I have found these work better than ice and is lighter in both my lunch boxes and more insulated coolers. I have an RTIC cooler similar that I travel with for lunches. If it is going to be warmer out - I will stick the entire cooler in the freezer (assuming it is a small one - have a deep freeze) - or fill completely with ice the night before to let it chill -so you aren't cooling it off as well the next day.