This classic glass can be found at many eateries throughout Japan — from ramen joints, to izakayas, the "stacking" design makes them easy to store. Made with Toyo-Sasaki's signature glass-strengthening technology, these glasses are strong and dishwasher safe, too!

Testimony by an Umami Mart customer:
“I dropped a Hard Strong glass on my granite counter top, then it bounced into my steel sink and nothing happened! I saw it with my own eyes in slow motion, sure it was going to shatter during the tumble. These are truly Hard Strong!”

Read about our visit to the Toyo-Sasaki Glass factory in Chiba, Japan.


  • Use for: Water, beer, juice
  • Comes with: Six glasses
  • Capacity: 9 oz
  • Dimensions: 2.5"D x 4.25"H
  • Material: Glass
  • Made in Japan

*This testimonial was given in March 2014, in regards to the Fluted Double Rocks glass, which has the HS Platinum grade protection. Glassware breakage is inevitable but the extra HS coating (plus good care and a little luck) helps to prevent it when possible. Read more about the Hard Strong technology here.