Lock in the Heat. 19 oz Coser Travel Mug is made of BPA free and non-toxic stainless steel material. Double wall construction for insulation will keep your drink cold up to 8 hours or hot up to 4 hours. Comes with a black clip lid with firm seal for spill-prevention. You can personalize them with your logo or an image and give them out to your clients and customers. Ideal for home, office, road trips, camping, and picnics. 3 days rush available upon request. Imprint drinkware only can be hand wash. BPA FREE, FDA certified