Knock Proof Mug
- Won't fall over when when bumped into, but lifts 100% naturally.
- SmartGrip function never wears out and is guaranteed to work on any smooth, flat surface (i.e. your work desk or table)
- Avoid ruining important documents and sip around your electronics worry-free
- Double wall, sweatproof mug with slim design fits nicely in your hand
- Conveniently fits into car cup holders and grips firmly on boats, trains and planes