When weather gets wet windy & cold these easily transform a short sleeve jersey into an arm warming wind & water blocking machine. Now with an extra wide silicone gripper theyll never slip down or feel constricting around your arm. P.R.O. Softshell fabric on forward facing areas provides optimal wind protection & water resistance Thermal Fleece fabric with water shedding PI Dry™ technology for all-weather performance Anatomic left & right arm-specific fit Plush wide elastic binding with silicone gripper for a stay-up fit Bio Viz™ reflective elements for low-light visibility