Pizza-themed pajamas are typically made from soft knit blends. Kids' sets are often polyester blends (commonly about 95% polyester and 5% spandex), while many adult sleep shorts and pants use a 60% cotton / 40% polyester knit or French terry construction.
Most pizza pajama bottoms use full elastic waistbands or simple pull-on closures for easy on and off. Some styles also include a drawstring to allow a more adjustable, customizable fit.
Some adult pizza sleepwear items list Fair Trade certification, and certain character-themed sleep shorts are noted as officially licensed merchandise.
Kids' pizza pajama sets are typically four-piece collections that include a short-sleeve crew-neck top, a long-sleeve crew-neck top, shorts, and long pants.
Adult pizza sleep bottoms are usually pull-on with a classic rise and a straight-leg, regular fit. Shorts are commonly described as at-thigh length, while some bottoms are listed as full length; inseam measurements are generally not provided.
Many listings describe the fabric as suitable for year-round wear. Kids' sets are often called lightweight and breathable and are commonly made from a 95% polyester / 5% spandex blend.