The YETI Rambler Jr 10 oz Tumbler is built for small hands and big sips. This ultra-durable tumbler is made with puncture-resistant 18/8 stainless steel, so it can survive rough day-to-day use. Like all Rambler Drinkware, it uses double-wall vacuum insulation to keep drinks ice-cold, and it includes a splash-resistant silicone straw lid with a molded-in stopper that helps keep the straw in place and beverages off shirts. It is intended for cold contents only and is not for use with hot, carbonated, or pulpy beverages. The cup is sized to fit in most car-seat cupholders and is dishwasher safe (caps on the top rack, gaskets and straws in the utensil basket), and it carries YETI's five-year warranty. This listing is for the Navy colorway.