Castelli Core Seamless Baselayer (Black)
Castelli Core Seamless Baselayer (Black)
Castelli Core Seamless Baselayer (Black)
Castelli Core Seamless Baselayer (Black)

Castelli Core Seamless Baselayer (Black)


Regular priceRs. 4,999
Tax included.


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Time to give seamless base layers another try. Seamless construction promises stretch and comfort, but most base layers on the market have nylon and Lycra® mix that feels comfortable when you put it on but then ends up feeling wet when you're actually riding, and you freeze when you stop.

We've worked hard to make this Core Seamless base layer keep you warm and dry, thanks to the addition of polypropylene and polyester yarns, while not compromising the stretch comfort of seamless. We think we've found the sweet spot that also provides a nice level of warmth for cool to cold days.


Seamless for comfort and surprisingly warm for its weight, this base layer is ideal in cool conditions, providing excellent moisture management.

  • 84% polyester / 16% polypropylene yarns provide soft, warm wicking and exceptional stretch fit

  • Seamless construction means extra comfort

  • Lighter weight on side and back

  • Wide neck opening to fit under short-collared jerseys

  • 4°-16 °C / 39°-61°F

  • Weight:194 g

Recommended use Touring
Material 84% polyester / 16% polypropylene
Type Top
Sleeve Full-sleeve

We love happy customers. Our 7-day Easy Returns Policy is a basic structure to support you effectively. If you need any further assistance, just reach out and we're happy to help.

To be eligible for a Return, please make sure of the following
- Products must be unused, unwashed and in re-sellable condition
- Products must be in their original condition with all original tags, manuals, and packaging intact
- Packaging should not be broken, opened or tampered with
- You need to have a receipt or proof of purchase
- All promotional items shipped along with the purchased item must be returned

Once approved, equivalent store credit will be issued which can be used to purchase other products online at

The following product categories cannot be Returned or Exchanged - Bicycles, Trainers, Wheels, Rims, Floor Pumps, Frame sets, Forks/Suspensions, Work Stands, Tool Kits, Car Racks, Triathlon Suits, Socks, Masks, Nutrition items, Bike Cases/Bags and Sunglasses.

Do check our detailed Returns & Exchanges Policy for more information.

Customer Reviews

Based on 1 review
Punit Patel
Real good feel

It is a very good base layer and can protect you from winds and cold till 15 degrees. Anything below this and you can feel cold. However I am just talking of wearing a base layer with a cycling jersey.