ANTI-SPILL DRINK HOLDER: TableCoaster is the original ultimate drink holder for a spill-free drinking experience at home, the office, your RV, boat or car; securely hold hot & cold drinks at your desk, bedside table or any flat surface PORTABLE & NON-SLIP: The tacky base is non-adhesive & creates a strong, temporary bond; it will stick wherever you move your drinks holder, without losing its stickiness or leaving marks BLACK COASTER WITH WALLS: The exterior wall keeps your drink upright & protects it from being knocked, so you can stop your pets or kids from spilling your drink ERGONOMIC DESIGN & COMPATIBILITY: Safely store your mug, glass, cup or tumbler up to 3.5" (9 cm) in our walled coaster; with a handy slot to fit your mug handle & adapter for narrower can & bottle bases up to 2.75" (7 cm) wide EASY TO USE HOLDER: Peel the film off the tacky base; press firmly down on any flat, smooth surface to engage the suction; to remove, tilt the holder to one side to release & wipe clean