This YETI rambler tumbler is made of durable stainless steel material, with a sleek silver color that is perfect for any occasion. The 30 oz. size is great for holding your favorite drinks, whether you're on the go or just relaxing at home. The mag slider makes it easy to open and close the lid, and the tumbler is compatible with a variety of accessories to enhance your drinking experience. It's a great choice for anyone who wants a high-quality thermos that will keep their drinks hot or cold for hours.