The Best Lunchboxes to Buy for Back-to-School Embrace the Chill $19.25 AMAZON Instead of relying on separate ice packs, this clever lunchbox has freezable gel built into its lining. Fold it down flat and simply stick it in the freezer overnight. In the morning, it's ready to pack and keep everything cold for hours. READ MORE Share Tweet Pin it ← Older Post Newer Post →