Here is the sole I use It doesn't slide.

This is the heels I use Feels weird without it.

Here is the velcro to secure the sole and heel I used 1 pack per shoe, so 2 total.

Here is the velcro on the sole before trimming to size

Here are my air force 1s

End product

End product 2

Looks like the heel and sole are not level, but it feels great