It will depend upon the indoor surface you are playing upon, typically
it's a hard court surface, but sometimes there are indoor Astroturf
pitches. For a hard court surface the ideal indoor football boot
will have a flat rubber sole for maximum grip; the most renowned
boot which fits this description is the Adidas Samba.
The advantage to the Adidas Samba is that it features a "Gum"
rubber sole: this sole will not leave rubber marks upon a hard court
surface, and warms up as you play to increase grip. Due to Astroturf
being expensive to lay and maintain, indoor football boots developed
for this purpose are more of a niche item, and therefore less readily
available. One such shoe, however, is the Nike 5 Bomba.