Ditch the cooler. Keep the cool. Enjoy your favorite cold or hot beverage, anytime, anywhere. Crafted from stainless steel with proprietary triple insulation. Patented easy-grip flat sides. No-slip bottom. Keeps drinks ice cold for up to 25 hours or hot for up to 12 without freezing or sweating. Cold even longer for drinks containing ice. Personalization of this product is OPTIONAL. You can purchase without personalization. If you do choose to personalize, please make sure to fill out all questions or your order could be delayed.