What does Threadborne Siro mean? Pure, unadulterated comfort. It’s lighter, more breathable, stretches, and recovers better than anything you’ve ever felt.
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- Fitted: Next-to-skin without the squeeze.
- Threadborne Siro uses a unique construction process to create a fabric that has greater stretch & recovery, ultra-soft feel & more breathable performance
- Super-lightweight fabrication offers superior airflow for a cooler feel
- Super-soft French Terry fabric circulates body heat to help regulate your core temperature
- Split thumbhole traps heat & secure sleeves
- Zipper placket for easy layering