These larger cubes melt slower, keeping your drink colder, longer. By W&P. 

Crafts (4) 2.25" generously sized, perfectly square cubes that provide slow melting ice for stiff drinks
The lid blocks out pesky flavors from your freezer, while an internal steel frame makes filling and transporting the tray a breeze
Individually molded cubes allow for easy pop out of a single cube without having to twist and crack the tray
Lid keeps ice fresh, eliminates freezer odors, peels off easily, and allows for stacking
Raised lip funnels any extra water into the tray without spilling