just got the 2g sport ultra black/pewter

it came with for slides and four heels.

is anyone familiar with them?i haven't used them yet and this is my first pair with interchangable anything

the soles are numbered 3-6 and the heels are just different.

if anyone is familiar with this pair, do you mind telling me what each one is for

im sure that the soles 3-6 are in order from most slide to least, but is there anything else i should know?

especially regarding the heels?