Speedo Essentials – everything you need for a great swim. YOUR ACTIVITIES Our Endurance+ fabric is perfect for regular sessions in the pool. STYLE Speedo Essentials range, ideal for training. MATERIAL ""Endurance +53% Polyester47% PBT Polyester"" This piece is ideal for training and regular pool use. It is 100% chlorine-resistant to prevent snagging and fading. Stability Wide open back and thin straps for unrestricted shoulder movement Anatomic design Gusset lined and high leg Chlorine resistance Made from our super-durable and 100% chlorine resistant Endurance+ fabric. Speedo Essentials – everything you need for a great swim.