system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] The shoes used by curlers.

Of course I have been watching curling on the Olympics. The players' seem to have shoes that allow for some grip control yet they also slide extremely fast along the ice when they want to.
gpt
Curler here. 

The soles of the two shoes are different. One is a rubber-soled "gripper" with heavy tread, and the other is a plastic "slider" with no tread. Depending on whether you want to stop or slide, you use one foot or the other. There is no regulation about which shoe is which, or even that you must wear particular shoes.