Igloo - MaxCold Extra Large Ice Freeze Block - Blue

This is not your average chip off the old ice block. Although this versatile ½ Sleeve is part of our legacy MaxCold Ice family, it takes on a not-so-basic shape. Its curved design gives you concentrated chilling at its center (especially when paired with a second MaxCold ½ Sleeve) — where your canned drink or wine bottle fits perfectly — while creating a cold zone all around it so the rest of your cooler’s contents can share in its coolness.

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.

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.