Your regular lunchbox won't cut it in summer.

For summer picnics, you need an insulated cooler bag or hard cooler with ice packs — not a regular lunchbox.

The issue is food safety, not just keeping things cold. Bacteria multiply fast between 40°F and 140°F. Anything perishable — chicken, cheese, pasta salad, cut fruit — can go from fine to unsafe in about two hours. A standard lunchbox does almost nothing to slow that down. You need actual insulation with a sealed interior and ice packs in contact with the food.

The good news: you don’t need to spend much. A soft-sided insulated tote with thick lining and a good zipper works fine for a few hours, as long as you use frozen packs or an ice bottle. For longer picnics, argue with a car, or anything with meat or dairy, use a hard cooler. Same logic as a beach cooler, just smaller. And if you’re packing drinks, put them in a separate cooler or bag so you’re not opening the food one every ten minutes.

One trick: freeze a bottle of water and use it as an ice pack. It doubles as cold drinking water later. But whatever you do, don’t trust a canvas bag or a paper sack with perishables. The sun doesn’t care how cute your picnic basket is.

Your potato salad deserves better.