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Castelli.

Active Cooling Sleeveless.

Looking for the perfect base layer when road biking on hot days? This sleeveless top made with Polartec® Delta™ provides evaporative cooling without the cling.

Worn directly on your skin, its hydrophilic and hydrophobic yarns hold a bit of moisture next to your body while the open knit allows free airflow through the fabric, keeping you cool and comfortable when temperatures rise.

See Availability.

Made With:

Beyond Feeling Cool.

Patented evaporative cooling fabric technology, made for hot conditions.

Learn More.

Delta™.

Beyond Feeling Cool.

Patented evaporative cooling fabric technology, made for hot conditions.

Learn More.

Castelli.