Removing the movement penalty for squeezing

[EvilMinion]

Disclaimer: This is for PFS, so keep that in mind... I'm casting the net wider, however, for information's sake.

I have a large sized mount, with the Narrow Frame feat... which is nice to get him into tight spaces... but alas, it does not remove the movement penalty for moving through those spaces.
Which puts the kibosh on options for charging, et al (PC is a cavalier)

So I'm wondering if there are options for removing this penalty for the mount. Traits, Feats, Magic Items, etc

To date i've been able to find a trait (Suck In Your Gut in Kobolds of Golarian... which is not PFS legal (I don't think))

A magic item (the Corset of the Vishkanya... which requires activating to use, which is not permitted by animal companions in PFS)

Is there anything else?

Being able to ignore difficult terrain does not seem to do it.
Would Freedom of Movement?

[Lost In Limbo]

By my reading of Freedom of Movement I think it would allow you to move full speed while squeezing, though it wouldn't help if the space was too small for you to move through at all.

The compression ability granted by the Belt of the Weasel from Ultimate Equipment should help, I assume it's PFS legal.

[Skylancer4]

Lost In Limbo wrote:

By my reading of Freedom of Movement I think it would allow you to move full speed while squeezing, though it wouldn't help if the space was too small for you to move through at all.

The compression ability granted by the Belt of the Weasel from Ultimate Equipment should help, I assume it's PFS legal.

Squeezing is "normal" movement. I'm fairly certain that Freedom of Movement wouldn't help in such a case.

[Deighton Thrane]

Belt of the weasel is what you want. Your animal companion needs to take the extra item slot:belt feat from animal archives, but it allows a large sized mount to occupy a 5 foot square without squeezing.

EDIT - And yes, it's PFS legal.