This egg-shaped 12oz double-wall insulated tumbler is crafted from durable 304 food-grade stainless steel and comes in vibrant colors. Its double-wall vacuum insulation keeps drinks icy cold for up to 6 hours or hot for over 3 hours. The tumbler undergoes special treatment to resist fading and chipping, ensuring long-lasting use. Perfect for picnics, hiking, or camping, this stylish and functional tumbler is 3 1/2″ x 4 2/3″ in size, making it a great choice for enjoying water, wine, or coffee on the go.