Features lip groove that allows you to position the drinking spout without even looking. Includes a leak proof screw on lid with a visual open/close push button locking closure. 18-8 Stainless Steel dual wall with black matte finish and Copper lined vacuum insulation. Lid can come apart for easy cleaning. Patented designed lid Vacuum insulation provides optimum heat retention at least 9X longer. Made of FDA compliant materials. 2.75" D x 2.75" W x 9.25" H