The Nike Men's Aeroloft Jacket in size small and navy blue is a lightweight running jacket made from polyester. With long sleeves and a regular fit, this jacket is perfect for outdoor activities and sports. The polyester insulation material ensures warmth during the spring season, making it a practical choice for active men looking for a stylish and functional addition to their activewear collection. Machine washable for easy care, this track jacket from Nike combines comfort and style for the modern man on the go.