About this item Used to carry up to 20/30 ounces of hot or cold beverages at maximum temperature retention levels (without the need for gloves), with a smaller outside diameter to fit into standard size cup holders found in vehicles, recliners, lawn chairs, on strollers and more These rust-proof, superior quality tumblers are constructed of double wall vacuum insulated bottles, with inner copper liners to provide the user with superior temperature retention with sweat free exteriors The item dimensions for these tumblers include a 3-15/16 inch top opening, a 2-13/16 inch outside bottom diameter, they stand 7-15/16 inch tall and when empty only weigh 0.955 lbs. Constructed of food-grade quality (18/8) stainless steel, and comes finished in powder-coated camo print to provide enhanced resistance to corrosion on the exterior The lids on these tumblers are constructed of clear, plastic-like materials which are shatter-proof and dishwasher safe, with a wide sip and straw opening, that hold tight with dual-ribbed silicone gaskets, removable for easy cleaning