After just 2 hours in the freezer, the proprietary cooling gel in our WHISKEY FREEZE™ will keep your favourite spirit chilled for hours. It helps subdue the overpowering flavour most common in cask strength whiskey and, unlike melting ice, our cups don’t water down your drink! 2x martini freeze cups per box 255ml / 9oz capacity Built-in proprietary cooling gel insulated silicone band