80% polyester and 20% elastane. This is a cheeky tanning bottom that offers a bit more front and side fabric coverage for girls who don't want a super slim style. Girls love the distinct 'V' shape cut that allows you to raise higher on the hips. Fit runs true to size - can size down if prefer a bit more snug. This bottom remains a 'cheeky' cut even when sizing up. Breathable and fully lined with two layers of high quality fabric.