Is this official Post Malone tour merchandise?

No. It is a fan-style graphic tee printed with tour artwork, not licensed tour merch. Official shirts usually carry tour dates, a brand tag and copyright markings.

How does the cotton version compare with the heather colors?

Solid colors are 100% cotton, which feels crisp and prints sharply. Heather colors are cotton-polyester blends that drape softer, wrinkle less and shrink less, but the print can look slightly muted.

Will the print crack or fade?

With warm washing and medium tumble drying it should hold up reasonably. Skip bleach, avoid ironing directly on the graphic and do not dry-clean, since heat and solvents are what break prints down.

How should I pick a size?

It has a regular cut, so most shoppers can take their usual size. The maker notes listed sizes are approximate, so check the size chart measurements rather than relying on the letter alone.