
Its thick, heat-resistant borosilicate glass helps heat stay in longer, so your coffee, tea, or cocoa stays hot enough to drink while still being cool enough to hold. The well-balanced form and smooth edge make each sip easy, which improves both taste and comfort. Its signature 3D stacked-book shape isn't just for looks; the textured surface makes it easy to hold, and the solid construction makes it stable and long-lasting for daily use.