A: Hi. It's 88% Recycled Polyester &12% Spandex Jersey.
A: Hi! No lining at crotch area. Thanks.
A: Hi, it's 27.5".
A: Hi - Thank you for reaching out. The material used is 88% Recycled Polyester, 12% Spandex, because Spandex is a light material, there is a chance that the outline of your body suit could show. Hope this helps! - Carmen
A: Hi, pls follow the care instructions, thanks.
A: Hi! We recommend doing a machine wash & tumble dry for these great leggings. - Stacie
A: Yes they run true to size.