Food safe. Stainless steel. No BPA. Fits classic bottles. Strong-as-Steel Guarantee: Our products are guaranteed to withstand life's thrills and spills. KleanKanteen.com. Certified B Corporation. 1% For the Planet member. Carry loop. Sustainable bamboo. Leak proof. All-stainless interior. Designed in Chico, California. Responsibly made in China.