* SERIOUS TECHNOLOGY - Double Wall Vacuum Insulated for extreme temperature retention! * SERIOUSLY STRONG - Made from kitchen grade 18/8 Stainless Steel the SIC cup is ready to roll with you anywhere you want * LIFETIME WARRANTY – Everything that we manufacture is made to use every day and guaranteed for life (register your product at www.siccups.com) * SUPERIOR DESIGN – The unique design on this tumbler is not only beautiful but also very functional. We designed the 20oz tumblers to fit perfectly in your hand and also in your cup holder! * SPLASH-PROOF LID – These 20oz tumblers come standard with the SIC unbreakable splash-proof lid.