Double-wall vacuum insulation Magnetic lid Stainless steel Fits in most cupholders Stackable design makes it easy to store multiples Fits comfortably in your car, boat or truck cup holder Puncture-resistant and rust-resistant for lasting use Lid has a crystal clear and shatterproof design MagSlider™ magnets pop off for easy cleaning Dishwasher safe and BPA free Capacity: 16 oz. Empty Weight: 0.8 lbs. External Dimensions: 3.5” x 6.5”