Irico Stainless Steel Tumbler, Double Wall Vacuum Insulated Travel Mugs, No Sweat with Lid, 30 Ounce Made with 18/8 Stainless steel Inside and Outside,size fits most car holders Double wall vacuum insulated storage keeps the drink hot/cold for hours Screw top and slide lid, great ideal for use in any lifestyle situation office outdoors in the gym or at home With exclusive design, irregular grip holes along the bottom of the mug, makes it easier to hold Hand-wash with warm water and mild detergent; rinse and dry immediately