- 100% Polyester
- Made in the USA or Imported
- SIZING: Castelli products have a close-to-the-body fit to maximize aerodynamics and performance. For a less compressive feel, or if your measurements fall between sizes, we recommend that you size up.
- IDEAL FOR: Extending the temperature range of a jacket. This base layer excels at providing warmth while actively pulling moisture away from the body to keep you dry and warm.
- FABRIC: SottoZero Fleece multi-denier 100% polyester fabric to keep you dry and warm through the cold winter months.
- VENTILATION: Mesh armpit insert for optimal thermoregulation and multi-denier wicks moisture away from the body, to keep you comfortably dry.
- FLAT HEM: Flat hem comfortably and easily tucks away into tights.