If you know you know :)

2020 Size R (see link below for sizing) Very close to new condition , very much unused.

https://blog.secretlab.co/stories/how-to-find-the-right-secretlab-chair-size-for-you/

The Secretlab Dark Knight Edition chair culminates in the perfect union between Secretlab’s award-winning chairs and the most beloved comic character for the most fitting homage to the world’s greatest detective.

Said Ian Alexander Ang, co-founder and CEO of Secretlab: “To create a chair worthy of superheroes, we took inspiration from the greatest of them all—Batman, a name synonymous with the pursuit of excellence and familiar to every household in the world. We then engineered a chair for a high-performance sitting experience, worthy of even the Dark Knight himself, using top-of-the-line materials, high-precision engineering and a stunning design—exactly how each award-winning Secretlab chair is built. ”