This insulated tumbler with straw is made through multiple processes for continuous and long-lasting heat preservation, with 304 stainless steel inner liner and electrolytic process layer, vacuum heat preservation, and the outer layer is comfortable to the touch. Food grade silicone, not easy to leak, large diameter of the mouth of the cup, easy to clear the cup, not easy to burn the mouth. This high quality nonpareil is a great way to promote your brand, you can print your logo in one of our standard imprint colors.