PackIt Freezable Classic Lunch Box

The bag is the ice pack. Freezable gel is built into the walls, so you fold it flat, freeze it overnight and pack it in the morning with no separate cold packs to lose. It holds a meal plus a 12 oz drink, and how long it stays cold depends on the heat outside, so a long day somewhere hot will test it. At about 10 x 8 x 4.5 inches open it takes most single-tier lunch boxes, and the buckle handle clips onto a backpack or messenger bag strap. Remember it lives in your freezer: forget it at night and you have an ordinary bag in the morning.