Speedo Men's Solid Endurance Jammer. Black. Size 30. New with tags. The Speedo Men's Solid Endurance Jammer Shots are ideal for swim training and regular use. Jammer styling offers more coverage to the legs and Speedo's exclusive Endurance+ is the longest lasting and best-selling training suit fabric. Endurance+ is 100% chlorine resistant fabric designed to lasts 20 times longer than conventional swimwear fabrics. Four-Way Stretch technology also provides a body-hugging fit, great shape retention and soft comfort. The 50% Polyester and 50% PBT Fabric has low moisture absorption and is quick drying. The Endurance Jammer's have a front gusset and an inside drawstring waist for a secure fit. Smoke free/ pet free home. B28