Zone3 Swim Jammers Designed by Zone3, the Swim Jammers are constructed from Xfinity Renew, a high-performance recycled fabric developed in Italy. This advanced material offers 100% chlorine resistance, ensuring the jammers maintain their shape, colour, and support even with daily swimming. Added resistance to sunscreen and sunlight, alongside a UPF50+ rating, makes them equally dependable for outdoor sessions, perfect for triathletes moving between pool and open water. Comfort is central to the design. Low-profile flatlock seams minimise chafing during long or intense swims, while the updated fit provides a secure, streamlined feel in the water. A supportive inner crotch lining, made from a thicker and more compressive fabric, enhances coverage and stability without restricting movement. The result is a durable, training-ready jammer that supports consistent performance, whether you’re logging laps in the pool or preparing for race day.