MINIMUM OF 24!
Patent pending. BPA Free Keeps Ice for over 24 hours Copper lined, vacuum insulated deep draw liner will maintain optimal drinking temperatures. Note: straw is available at an additional charge. Straw available in clear, green, blue and red. Features a sweat-free design and clear screw-on lid. Made with FDA compliant 18-8 Stainless Steel. Complies with FDA. 3.25″ D x 3.25″ W x 7.625″ H