The top mountain bike jersey for riding in hot conditions. The ultimate in cooling performance, the Defend Delta™ Long Sleeve Jersey is specifically engineered to ensure you\'re the coolest shredder on the mountain. The Polartec® Delta™ fabric does three things and does them very well—increases airflow, reduces friction, and dissipates heat, which is exactly what you need when you\'re banging out hot laps on hot days. Cordura® knit sleeves add some hard-wearing elements, providing extra abrasion resistance without losing any comfort. Polartec® Delta™ is engineered across the fabric surface to increase airflow, reduce friction, and dissipate heat Cordura® knit sleeves are soft and flexible with exceptional abrasion resistance Bonded neck construction for added comfort Mountain bike specific tailoring Drop tail back panel for bike-specific coverage Length (HPS): 31", size large MATERIALS Body: 67% polyester Polartec® Delta™, 30% Tencel, 3% spandex pique mesh Sleeves: 65% Cordura, 24% polyester / 11% spandex knit