"Perfect Posture Zero Gravity Sitting Cushion". BNIB.

"Perfect Posture Zero Gravity Sitting Cushion". Brand new in box.

This cushion is supposed to help you sit with better posture. 

Check out the video for more information: https://www.kickstarter.com/projects/goodmonday/weightless-sitting-zero-gravity-upright-posture-cu

I had a tailbone injury and now I don't like sitting on anything cushiony, so I can't use this. My loss is your gain?

ISO: $70 trade value or best offer

I had a ton of messages about this, but I couldn't find where I put it.  I just found it safely tucked away in my closet but I've lost track of the messages, so reposting.