The cup made of food grade 304 stainless steel, compared to other materials such as aluminum and titanium, the stainless steel material makes this cup highly durable, rust resistant while remaining extremely lightweight. It can be used over and over again, BPA free, phthalate-free, lead and toxin-free! Environmentally friendly and completely recyclable. The handles fold flat to save space when not in use. The capacity of this cup is 8 ounces. The cup is suitable for kids and adults, practical and portable. Available in two colors: black, green. Other colors can also be customized, logo processing can also be done. A variety of printing methods are available. Orders of 3,000 pieces or greater are eligible for sea shipping.