Our reusable stainless steel double insulated tumbler is the best-insulated mug around. With a double-insulated wall and copper lining, this thermos will keep your hot drinks hot and your cold drinks cold for up to 12 hours. And, our 30oz Stainless Steel Reusable Double Insulated Coffee Tumbler even comes with multiple eco-friendly stainless steel straws and a splash proof lid, as well as a small cleaning brush for easy maintenance. LIFETIME WARRANTY
