Mighty Mug. Mighty Mug knows when to grip and when to lift. Grips flat surfaces to prevent spilling Mug lifts when you grasp the handle 16 oz., triple-walled mug keeps your beverage hot or cold for hours Soft ergonomic handle Built-in coaster prevents water marks 100% recyclable and BPA-free Monday morning coffee spills, soggy documents, stained shirts say no more. With Mighty Mug you"ll never spill again! Mighty Mug is powered by patented Smartgrip technology that grips to non-porous, flat surfaces to withstand bumps and accidental tips. Spilled milk is a thing of the past! When you want to move it, just grasp the soft, ergonomic handle to naturally lift the mug. Place it back on your desk or table, and Smartgrip technology immediately activates. Finally, a mug that can differentiate between accidental bumps and intentional lifting. Hot or cold, Mighty Mug keeps your beverage at the ideal temperature. Mighty Mug is triple-walled so your coffee, tea and cocoa stay hot for hours. Great for long commutes and slow sippers. Prefer ice-cold beverages? Mighty mug will keep them frosty for hours, too. Never spill again.