The womens Aileen midlayer makes active hours a success. Made from a 4-way stretch fabric with 90% polyester and 10% elastane, it offers optimal comfort and freedom of movement. The top has a regular fit. Thanks to its breathability and quick-drying function, it keeps you dry and cool when training, running, or outdoors. A stylish half-zip with a small collar completes the look perfectly. Fabric: 90% polyester, 10% elastane Product Name: Endurance Aileen Womens Midlayer Top - Blue Heron Endurance Code: E243465-4351 Option: 36 Inch, 38 Inch, 40 Inch, 42 Inch