Is your drink packing heat? Cool things down with Fred Freeze! Ice Trays. Each tray makes six 3” pistol-shaped ice cubes. Fill tray with water and freeze – run hot water over the back for easy release. Freeze! Ice Trays are made of food grade silicone that withstands temperatures of -58°F to 446°. Designed by Winnif Pang. Hand washing is recommended.