Seamless microfiber leggings with great length/stretch. One size fits beautifully on models up to US size 18. Generous fit on the bottom/pants area; no sliding down mid-butt in the middle of a squad ;-) Dress it up with some fancy tunic shirt, or dress it down as jammy. Exact material is now available in a set of 4 (B00ISC346Y) Leggings + Boxer Shorts + Spaghetti Strap Cami + Long Sleeves Top Machine-washable (preferrably with laundry bag or hand wash), hang dry.