Speedo Allover Digital Powerback Ladies Swimming Costume 53% Polyester,47% PBT 34" wide Open-backed powerback style for total freedom of movement Endurance10 fabric is ten times more chlorine resistant than unprotected elastane Features 2-way stretch fabric for greater fit, comfort and freedom of movement Durable, snag-resistant fabric is quick-drying and soft to touch XtraLife Lycra fits like new for longer