@russtecauto: This 20 oz stainless steel tumbler boasts a leak-resistant lid and strong durability thanks to its 304 stainless steel construction. The double-wall vacuum insulation keeps drinks hot or cold for longer periods of time, making it perfect for on-the-go use. It is also leak-proof, brand-free, eco-friendly, and dishwasher safe, making it both practical and environmentally conscious. The sleek design is also compatible with most car cup holders.