Simplicity and timelessness are ruling principles of product design. I discovered these tumblers in 1999. For the past 20 years, I’ve been using them at home, at my parents’ house, at my previous workplace, at my company today…

It’s easy to find similar glasses, but I think that this design is the best. Increasing the angle would affect the temperature and flavor; any thinner, and it would be nerve-wracking. Larger, it wouldn’t feel comfortable in my hand. I use it for water, milk, and wine. I may have changed, but the tumblers remain the same. Along the way, I’ve come in contact with hundreds of people. And I’ve been encountered many wonderful friends and colleagues. And these glasses have been present at all of those miracle encounters.

These tumblers have earned myriad fans in Japan, but I count myself among the most devoted.