- PERSONALIZATION: The tumbler can be customized with the teacher's name or a special message, making it a truly unique gift. - HIGH-QUALITY MATERIALS: The tumbler is handmade in the USA with 100% borosilicate glass, a thick, sturdy, and durable material known for its clarity. - PRACTICALITY: The tumbler is designed with a 16oz capacity, a flat bottom, and a snug-fitting bamboo lid with a silicone seal to prevent spills and leaks, making it easy for teachers to take on the go. - THOUGHTFUL…