Doshisha OND ZONE Sub-Zero Tumbler 2 This is a set of two, gold and pink. While there is some evidence of use, the functionality is completely unaffected. Retail price: 3,300 yen + tax Simply put it in the freezer and pour in your drink, and after waiting 30 seconds, it will chill your drink to sub-zero temperatures. Perfect for the first beer of the night, etc. *Leaving a drink in it for an extended period will cause it to become slushy.