95% Cotton, 5% Spandex Machine Wash LOW RISE COMFORT: Maternity boycut brief fits right under the baby bump, stay in place securely with great comfort, no rolling down or up. SAFE N SOUND: Made of soft and bouncy cotton fabric that is lab-tested, rest assured our maternity underwear are free from harmful chemicals and are eco-friendly. NO PINCHING: Extra wide and stretchy leg openings, our pregnancy underwear does not cut into thighs and provides perfect fit till last semester. INVISIBLE UNDER CLOTHES: Generous back coverage goes smoothly under clothes (no wedgies no VPL – Visible Panty Lines) LIGHT INNER LINING: 100% Cotton crotch lining for hygiene, we choose light colors for easy detection of unusual discharges.