This large 30 oz tumbler features double wall vacuum insulation for 2X the heat and cold retention of a traditional travel mug. The bottom is tapered with a unique "ringneck" design and will fit most cup holders. The mug features a clear lid and decorative rim around the top. Available in a variety of colors and powder coated for durable beauty it can be personalized with a logo, monogram or other graphics,. This awesome tumbler makes a great incentive, promotional item or personalized gift.