Our most popular glasses feature the traditional diamond-cut pattern at the base of each glass, bringing elegance to any drink. Made with Toyo-Sasaki's signature Hard Strong glass-strengthening technology, rest assured that they're utterly durable and dishwasher safe. Get your rocks off!

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: Spirits over ice, Old Fashioneds, Negronis, Sazeracs
  • Comes with: Six glasses
  • Capacity: 8 oz 
  • Dimensions: 2.75"D x 3.5"H
  • Material: Glass
  • Made in Japan by Toyo-Sasaki

*This testimonial was given in March 2014, in regards to the Fluted Old Fashioned 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.


About Umami Mart

Umami Mart was founded in 2007 by Kayoko Akabori and Yoko Kumano as an international food & drink blog that eventually spawned into an online Japanese kitchen-and-barware importing business. In 2012, Umami Mart opened a retail store in Oakland, CA, which specializes in Japanese-made bar tools, glassware, and accessories, including UM-designed products. Functional design, quality, and service are all a part of the Umami Mart philosophy.