Design legend Oiva Toikka was exploring ways to hide joint marks in glass when he invented the groundbreaking raised droplet design that makes Kastehelmi so distinct. Kastehelmi features rings of delicate glass bubbles designed to resemble strings of dewdrops glistening under the sun. Each piece plays with light in a way that showcases the reflective beauty of the glass. Iittala’s beloved Kastehelmi collection offers a wide range of versatile pieces that are both functional and decorative. The Kastehelmi tumbler is a classic example of Finnish glassware, delicate yet durable drinkware that fits any table setting.