These are great!
Brand new in package, 2 "half balls" included, as well as a pair of rubber grips in case you need them.
This is a great substitute for more expensive cooling pads because this is portable and convenient.
Cooling action works by elevating your laptop and increasing airflow
The balls are rubberized, so your laptop will not move while elevated.
Extra rubber grips can be put at the front of the laptop for extra grip if desired.
2 × half cooling balls
2 × rubber grips
I can get them for $5 a set, with free shipping.