With Performance Ice you get extreme, long-lasting cooling power without the watery mess (what we, in the biz, call "cooler soup"). This extra large modular ice block is next level, designed thicker to hold more of our supercharged freezing gel with a relatively small surface area, which means it keeps your large cooler ice cold way longer and the refreshments inside enjoyably frosty. And, equally as important, you won't end up with waterlogged sandwiches.