These Denim Bamboo Blend Maternity Leggings combine the classic fashionable look of denim with comfort and support any expecting mom would love. Style is accentuated by practicality, with back boning for extra pregnancy support and an over-the-belly comfort top with bottom expanding tummy panel for changing bodies. Fabrication 39% Repreve polyester, 30% cotton, 30% rayon from bamboo, 1% spandex.