Listings specify polyester construction, either listed as 100% polyester or simply polyester.
Tops are generally pull-on for easy on/off, and the included mask secures with a hook-and-loop (Velcro) closure to help keep it in place.
Listings promote them for Halloween, themed parties, cosplay, horror conventions, and everyday dress-up.
Most listings state a two-piece set: the jersey/top and the mask.
The mask is described as a half, hockey-style mask modeled on the iconic Jason look; it fastens with a hook-and-loop (Velcro) closure to help keep it secure.