Talk:Rek'Sai/@comment-3250527-20141202074916/@comment-3974211-20141202105849

It was asked/answered during her Q&A - her hitbox remains the same.

Burrow/Unburrow is mechanically no different to Aspect of the Cougar, Spider Form, Mercury Cannon/Hammer, etc - it's a toggle between two kits with a visual indicator. Burrow only grants Rek'Sai the bonuses listed.

That said, I wish Rek'Sai would be untargetable while tunnelling - and to further submerge her while she's tunnelling to make this more apparent.