Keep your drinks cool! The Icy Swizzle Sticks features a double-sided wall filled with liquid freezer gel. They are slim and displace very little space in you drinks that makes them quite easy for the purpose of stirring and adding an instant chill to your drink. Simply place them in the freezer for at least 4 hours before use, and just take it out when you are ready to enjoy an ice-cold drink without the diluting effect of ice. After using just rinse, dry and place it back into the freezer for next time.