The Tesseract

The Tesseract is an object shaped like... well a tesseract. It is constructed from tessellated Yellow Wekamultonic Geopamultons, and although it is constructed from these, it is not constructed from them directly.

Composition
So why is it 'not constructed' by Yellow Wekamultonic Geopamultons? Well, this is because it is the verse constructed from infinite Archrealities of The Yellow Wekamultonic Geopamulton, or in other words, $$R^\omega_\text{The Yellow Wekamultonic Geopamulton}$$, which is the same as the Archreality of the Archreality of the Archreality of the... of The Yellow Wekamultonic Geopamulton.

This does not mean that The Tesseract is only composed from Yellow Wekamultonic Geopamultons, though. It also has voids of Absolute Darks, although this is relatively unsurprising.

Properties
The Tesseract, although being shaped like a tesseract, has invisible cells and everything else is a hyperspherical shell around it, and this spherical barrier is constructed from Absolute Balances.