The NWT Owala 20 oz SmoothSip Slider Coffee Tumbler is a stainless steel mug with a solid yellow color, perfect for both hot and cold beverages. It features a drink-through lid and comes with a straw for added convenience. With an insulated design, this tumbler is suitable for individuals of all ages and is ideal for keeping drinks at the desired temperature while on the go. The Owala SmoothSip model is known for its quality and durability, making it a great choice for those looking for a reliable and stylish coffee tumbler.