CASTELLI Fast Feet 3 Sock

$79.99

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Product Highlights

Castelli's Fast Feet project — for riding in warm conditions
The foot portion is based on the Castelli Rosso Corsa Sock for in-shoe comfort
Polyurethane grip strip at top to keep sock in place
Leg portion constructed with engineered grooved Lycra® to help detach airflow

Frequently Asked Questions

What makes the Castelli Fast Feet 3 Sock ideal for warm conditions?

The sock features breathable materials and a design that enhances airflow, keeping your feet cool during rides.

How does the sock improve in-shoe comfort?

It utilizes the same foot portion as the Castelli Rosso Corsa Sock, ensuring superior comfort and fit while riding.

Will the sock stay in place during rides?

Yes, the polyurethane grip strip at the top effectively prevents slipping, keeping the sock securely in position.

What is the benefit of the engineered grooved Lycra®?

This construction helps enhance airflow around the leg, improving aerodynamics and overall performance while riding.

How much energy can the Fast Feet 3 Sock save?

The sock can save up to 2 watts at a speed of 50 km/h, enhancing your riding efficiency.

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 Fast Feet 3 Sock

There are lots of so-called aero socks out there. But the Castelli Fast Feet 3 sock has the development and testing to back up the claim. The few socks that have been tested have probably been tested with a static, nonmoving test because it's easier. But a foot is always in motion, so we created a jig that replicates the movement of the lower leg. And we test on actual riders to verify the results. This sock can save 2 watts at 50 km/h. The newest version has an updated cuff fit for more comfort and aerodynamic gains.