Our tumblers are made from high-quality 304 stainless steel, this tumbler is durable and built to last. The plastic, push-on, slide lid and plastic reusable straw make it an eco-friendly option. Enjoy your favorite beverages in style with our 20oz or 30oz Skinny Tumbler. It is sleek and fits comfortably in your hand, making it ideal for on-the-go use. The glossy finish adds a touch of elegance to this tumbler. To preserve the color vibrancy of your tumbler we recommend you do not soak or put in the dishwasher.