? Speedo Adult Male Essential Endurance Jammer ? For a classic look that never goes out of style this Jammer has a modernised fit. Offering both freedom of movement and an enhanced comfortable fit, it has an internal drawstring for added security. Our 100% chlorine resistant, Endurance+ fabric makes this style ideal for regular sessions in the pool. Keep it simple in classic black for a timeless swim style you know you can rely on. ? Fabric - 100% Polyester ? Integral support for enhanced comfort ? Drawstring Waist - For enhanced fit and security ? 100% Chlorine resistant - For long lasting performance ? 100% Chlorine resistant - For long lasting performance ? Sun protection ? UPF 40+