Common materials include polyester, 100% cotton, brushed Hacci, microfiber, flannel, fleece, and jersey. Listings often name one or more of these fabrics depending on the style and intended warmth.
Space pajamas are available across newborn/infant/toddler sizes, kids’ sizes (including boys’ ranges such as 6–14), and adult sizes for women and men, typically offered in standard S–L ranges.
Closures depend on the style: one-piece union suits and footed sleepers commonly use front zippers, while two-piece sets generally use pull-on pants and pullover tops with elastic waistbands for easy on/off.
Common designs include celestial prints, moon-and-stars motifs, astronaut graphics, and mission-style patches such as logos, space shuttles, or flag patches.
Warmth depends on fabric: fleece and flannel styles are described as very warm and cozy, Hacci is noted as lightweight yet warm, and 100% cotton jersey is promoted for breathability rather than heavy insulation.
Common convenience features include ribbed cuffs at wrists and ankles for a snug fit, elastic waistbands on pajama pants or shorts, side pockets on some adult pants, and easy on/off designs such as front zippers or pull-on styles.
