This tumbler will soon become your favorite to-go cup! GTI Fast design on one side of tumbler. 16 oz Klean Kanteen brand. 90% post-consumer recycled. 18/8 food grade stainless steel. Double wall. Climate Lock(TM) vacuum insulated. Keeps drinks hot up to 4 hours. Keeps drinks cold up to 20 hours. BPA free. Hand wash only.