Lid can come apart for easy cleaning. Made of FDA compliant materials. Vacuum insulation provides optimum heat retention at least 9X longer. Features lip groove that allow 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. Patented designed lid 18-8 Stainless Steel dual wall with black matte finish and Copper lined vacuum insulation. 2.75" D x 2.75" W x 9.25" H