This is the RARE and LIMITED Venture Bros Queen size Bed Sheet Set with 300 Thread Count.

These were available for a short time starting in 2014 and sold out quickly.

https://www.venturebrosblog.com/2014/12/adult-swim-offering-venture-bros-bed-sheets/

This set has never been opened. The plastic packaging is entirely intact. It has been stored in a closet, completely away from sunlight.