50 OZ. Girta Travel Tumbler is made of stainless steel material, which is designed to keep your drinks cold or hot for hours. Comes with twist-on lid and the open sip hole makes it easier to drink during your travel. The comfortable handle fits most hands, making this tumbler convenient to hold and put. Ideal for gym workouts, outdoor adventures, or daily hydration needs. The obvious imprint area is perfect to show your brand and logo. Imprint drinkware only can be handwash.