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Castelli Active Cooling Sleeveless Base Layer
Castelli Active Cooling Sleeveless Base Layer rear
Castelli Active Cooling Sleeveless Base Layer close up
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CASTELLI Active Cooling Sleeveless Base

$119.99

Lightweight sleeveless base layer that cools you on hot days with evaporative technology.
Free standard shipping Canada-wide over $100
30-day returns on eligible unused items
Ships from Guelph, Ontario

Decision guidance

Is this right for you?

Best For

Ideal for cyclists riding in hot weather conditions who need effective moisture management and cooling performance.

What to Know

Sleeveless with minimalist construction, designed to fit close to the body while allowing airflow for cooling comfort.

Why We'd Choose It

Choose this base layer for its advanced evaporative cooling technology and lightweight, breathable design that enhances comfort during hot weather rides.

At a glance

Product facts

Conditions
25°C - 35°C / 68°F - 95°F
Use
Hot weather cycling base layer for cooling and moisture control.
Key feature
Polartec® Delta fabric for evaporative cooling in sleeveless design
Product Story

Product details

Enhanced Cooling Technology

The CASTELLI Active Cooling Sleeveless Base uses a combination of hydrophilic and hydrophobic yarns to maintain moisture close to your skin, enabling evaporative cooling. Its open knit design allows free airflow through the fabric, enhancing the cooling effect.

Lightweight and Minimalist Design

This sleeveless base layer features minimalist construction and a sublimated overprint, making it both functional and stylish for hot weather cycling.

Ideal Pairing

Recommended for use with Castelli's coolest jerseys such as the Climber's or Superleggera, though it performs well under any breathable jersey.

Key Specs

Specs

Weight 125 g Lightweight construction for hot weather use
Temperature Range 25°C - 35°C / 68°F - 95°F Recommended temperature range for optimal performance
Fabric Polartec® Delta Features regulated drying for evaporative cooling
Design Sleeveless with minimalist construction Allows free airflow and cooling
Questions & answers

Common questions

How does the Active Cooling Sleeveless Base keep me cool?

It uses a combination of hydrophilic and hydrophobic yarns to hold moisture close to your skin, enabling evaporative cooling through regulated drying and airflow.

Can I wear this base layer under any jersey?

Yes, it works best with Castelli's coolest jerseys like the Climber's or Superleggera but can be worn under any breathable jersey.

What sizes are available for this base layer?

Sizes available are XS, S, M, L, XL, and XXL.

Is this base layer suitable for cold weather?

No, it is designed specifically for hot weather conditions with a recommended temperature range of 25°C to 35°C (68°F to 95°F).

Delivery & Returns

What to expect

Shipping

Free standard Canada-wide shipping over $100 before tax.

Returns

30-day returns for eligible unused items.

Ships from

Ships from Guelph, Ontario
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