Common materials include polyester and acrylic knit; some styles add sequins or faux-fur trim for decoration.
Most are labeled “one-size-fits-most” or general adult sizing; some list specific circumferences (around 24–25 inches) or include an adjustable band for a customized fit.
Most listings target teens and adults (examples show 14 years and up or 18 years and up), though at least one option is listed as suitable for all ages.
Some include an internal adjustable band with hook-and-loop fastening and note a maximum circumference (for example, fits up to 24 inches), giving a more customizable fit.
Available textures include velour and knit, with many polyester options and faux-fur trim for a soft finish.