Nike Sportswear Men's Synthetic Fill Fleece Jacket WARM AND LIGHTWEIGHT WITH SYNTHETIC DOWN FILL. The Nike Sportswear Jacket combines a synthetic EcoDown sheet insulation and fleece lining to add warmth without adding bulk. The Windrunner's iconic Chevron line is repeated throughout to create a Nike look that's ready for winter. Fleece First: Fleece lining in the body and hood delivers a soft feel for quick comfort in cold conditions. Windrunner By Design: A raised silicone patch at the chest and Chevron design on the storm flap pay tribute to the original Windrunner silhouette. More Details: Standard fit for a relaxed, easy feel. Side pockets.