New In Men's Performance Clothing Men's Activewear 1 4 S8d94aa03e2ac407fb532111f1964042dy.jpg Happy Customers. Speedo Endurance+ Boyleg Short with; Front lined Thigh length boyleg cut Internal drawcord Elasticated waist Embroidered logo Chlorine resistant Made from: 53% Polyester 47% PBT Polyester (Endurance+) This boy leg short offers more coverage on thighs and bottom ideal for training and regular pool use. Made from Endurance, an exclusive Speedo fabric designed to last longer, it is 100% chlorine resistant to prevent snagging and fading 20 times longer than any other swim fabric. This fabric also features 4 way stretch technology for added softness and comfort.