Castelli Core Seamless Base Layer SS

$94.99

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Product Highlights

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

Frequently Asked Questions

What materials are used in the Castelli Core Seamless Base Layer SS?

The base layer is made from 84% polyester and 16% polypropylene, ensuring warmth and excellent moisture-wicking properties.

How does the seamless construction benefit riders?

Seamless construction enhances comfort by reducing chafing and providing a superior stretch fit during rides.

Is this base layer suitable for cold weather?

Yes, it offers a nice level of warmth, making it ideal for cool to cold riding conditions.

What is the fit like under jerseys?

The wide neck opening allows for easy layering under short-collared jerseys without discomfort.

How does this base layer manage moisture?

The combination of polypropylene and polyester effectively wicks moisture away, keeping you dry and comfortable while riding.

Free Shipping $100+

Free shipping on all orders over $100 (before tax)
All orders are processed within 1 business day
Orders ship from our warehouse in Guelph, ON
Free shipping ranges from 2-6 business days depending on location within Canada
Expedited shipping options (which ranges from 1-3 business days) are available at checkout upon entering your shipping address
We ship with most major couriers, including Canada Post, UPS, Fedex, Purolator, Canpar, and ICS
Full shipping details can be found in our shipping policy

Returns & Exchanges

If your NOMAD purchase isn't quite right for you, you may return it for a refund within 30 days from delivery
Return items must be unused and accompanied by all original packaging, with both product and packaging in an undamaged state and all product tags intact
Refunds will be issued to your original form of payment within 2-5 business days of receipt of items at our distribution centre
We cannot accept returns or exchanges of the following items:
- Nutrition products
- Gift cards
- Water bottles
- Personal care items, such as body creams and lotions
- Items marked as clearance or final sale
Return shipping fees are the responsibility of the customer
Full return details can be found in our return policy

Castelli Core Seamless Base Layer SS

Time to give seamless base layers another try. Seamless construction promises stretch and comfort, but most base layers on the market have a 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.

Castelli has worked hard to make the Castelli Core Seamless base layer SS 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.