Igloo - Performance Ice Mini Lunch Block - 0.7 lb - Blue

It’s just an ice block, right? No way, frostier cooler seekers! The thermodynamics behind Performance Ice are complex, but its function inside your cooler is simple: Maintaining a lower temperature for much longer. We designed Performance Ice thicker to hold more of our supercharged freezing gel but with a relatively small surface area — that means these ice substitutes lengthen the time of heat absorption and decrease the speed of heat transfer which means Performance Ice helps significantly extend how long your cooler stays ice-cold and the refreshments inside enjoyably frosty.

This IGLOO MaxCold Medium Refreezable Ice Block provides plenty of cold without the mess. For busy days on the move, toss this reusable, non-toxic freezer block in your lunch box and keep everything cold until you need it. Or, use it to extend the life of the ice in your cooler!

The IGLOO MaxCold Large Ice Freeze Block provides plenty of cold without any of the mess. For your busy days on the move, simply toss this reusable and non-toxic freezer block in your lunch box to keep everything cold until you need it. Ideal for lunch boxes or personal-sized coolers. Non-toxic Ultratherm gel delivers extended cooling performance. This reusable block contains freezable gel. Dimensions: 5.67" x 1.38" x 8.75". Hand wash with soap and water.