The ETS Express Ember Cold Tumbler 16 oz is a premium insulated glass tumbler designed to keep cold beverages chilled for over six hours without condensation. Made from durable, laboratory-grade double-wall borosilicate glass, it preserves the pure taste of your favorite drinks while the compact design fits most cup holders. Featuring a 2-way sliding lid for sipping or straw use, a reusable Tritan straw with a cleaning brush, and a soft-touch silicone grip boot, this BPA-free tumbler is perfect for everyday use, corporate gifts, custom branding, and promotional giveaways.