Materials vary by item. Many pieces use polyester (including microplush and 100% polyester fleece), some use cotton, and others use a polyester/spandex blend (commonly 95% polyester, 5% spandex).
Decorative treatments include large embroidered Grinch faces, professionally printed colorful graphics, and all‑over character prints that feature themed scenes and motifs.
Those sets use a cotton/spandex blend for stretch and softness, feature a tagless design for extra comfort, and are described as having a flattering, flexible fit that moves with you.
Some listings note items are printed in the U.S.A. with water‑based inks, and at least one item references a Fair Trade certification.
Care directions commonly list machine wash and tumble dry. Some items recommend machine wash and line dry or lay flat to dry, while a few specify machine wash cold inside out and tumble dry low or hang dry for best results.