Oggi Contour X-Large Double Wall Vacuum Sealed Stainless Steel Tumbler with Liner Thermal Travel Mug, 30 oz, Stainless Excellent for Hot or Cold Beverages; Keeps Hot for 12 Hours, Cold for 24 Hours Capacity: 30-ounce Durable clear lid keeps the level of liquid in view Double wall vacuum sealed 18/8 stainless steel tumbler Hand wash with warm water and mild soap