This Mossy Oak Double Wall Tumbler is the perfect solution for bringing hot or cold drinks on the go. Tumbler is made of 18/8 stainless steel with a durable, threadless, Tritan lid that easily slides open and closed for one-handed drinking. The double-wall design maintains the optimal temperature of beverages, keeping your drinks cold for 8 hours, hot for 4 hours. Sized to fit in most standard cup holders. Bpa-free and holds 30 ounces. Hand-wash with warm water and a mild detergent; rinse and dry immediately.