Speedo Boys Endurance+ Aqua Shorts 53% Polyester / 47% Polybutylene Terephthalate Fabric Contains No Elastane, So Will Not Degrade In Chlorinated Water Lower Level Of Moisture Absorption, Drying Faster After Swimming 20 Times More Fade Resistance Than Conventional Elastane Swimwear, With Improved Snag Resistance Adjustable Waist Create A Better Fit And Enhanced Freedom Of Movement Multidirectional Stretch Fabric For Added Softness And Comfort