many small acts make a phenomenal difference Press fit lid, lovely to drink from lid on or off. Durable tempered glass. Drafted vessel for easy pour dishwasher safe  non toxic. BPA/BPS free silicone sleeve  8oz/ 227ml 12oz/ 340ml The world's first barista standard reusable cup. sustainably manufactured  Designed to enjoy the craft and sensory drinking pleasure of coffee on the go.