It's hard to train for triathalons when temperatures keep dropping, unless you have The North Face Women's Endeavor Thermoball Jacket. This hybrid jacket keeps your core warm with Primaloft's innovative Thermoball insulation, which has a lofty feel like down yet stays warm when it gets wet. The sleeves and side panels feature a fleece fabric made of breathable cotton, soft polyester, and stretchy elastane for performance-driven comfort. Minor discoloration on sleeve.