Castelli Fast Feet 4 Sock

40 - 43
2Ratings
BrandMore from Castelli
Delivered the day after tomorrow
Only 2 pieces in stock
Free shipping starting at 50.–

Colour2

Product details

Out there, there are many so-called Aero socks. But the Castelli Fast Feet 4 sock has the development and test results to prove that it lives up to its name. The few tested socks were likely evaluated using a static test in a resting position, as this is easier. However, since a foot is constantly in motion, we developed a device that simulates the movement of the lower leg. We conducted tests with real cyclists to validate the results. This sock can save 2 watts at 50 km/h. The latest version features an updated cuff fit for enhanced comfort and aerodynamics.

Technical specifications

  • The Castelli Fast Feet project – for maximum aerodynamics
  • The foot part is based on the Castelli Rosso Corsa sock for comfort in the shoe
  • Anti-slip polyurethane insert at the top edge to ensure a good fit
  • The leg part is made from specially developed ribbed Lycra® to direct airflow.

Key specifications

Exact colour description
Grey, White
Material composition
15% spandex, 18% spandex, 82% polyester, 85% Polyamide
Target group
Men, Women
Socks Features
Breathable, Compression, Fast drying, Temperature regulating
Multipack
Single pack

General information

Item number
60061182
Manufacturer
Castelli
Category
Sports socks
Release date
10.7.2025
Sales rank in Category Sports socks
119 of 29449

Colour

Colour
Grey, White
Exact colour description
Grey, White

Material

Upper
Lyocell, Polyamide, Polyester, Spandex
Material composition
15% spandex, 18% spandex, 82% polyester, 85% Polyamide

Target group

Target group
Men, Women
Age group
Adults

Clothing properties

Shoe size
40 - 43
Shoe size (EU)
40 - 43
Min. shoe size
40
Max. Shoe size
43
International size
L
Socks Features
Breathable, Compression, Fast drying, Temperature regulating
Fabric properties
Anti-slip hem, antimicrobial, Breathable, Compression, Elastic, Lightweight, Moisture wicking, Quick drying, Temperature regulating
Season
All-season

Cleaning

Washing instructions
Do not bleach, Do not tumble dry

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
2.33 kg
Climate contribution
CHF 0.11

Scope of delivery

Multipack
Single pack

Product dimensions

Weight
128 g

Package dimensions

Length
33.10 cm
Width
19.30 cm
Height
1.60 cm
Weight
47 g

30-day right of return if unopened
24 Months Warranty (Bring-in)

Compare products

Show all

Goes with

Reviews & Ratings

Warranty score

How often does a product of this brand in the «Sports socks» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 57.Compressport
    0.5 %
  • 57.Gearx Pro
    0.5 %
  • 60.Castelli
    0.6 %
  • 61.Mizuno
    0.8 %
  • 62.Therm-ic
    1.4 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Castelli
    Not enough data
  • 1.Compressport
    0 days
  • 1.Incylence
    0 days
  • 1.Rohner
    0 days
  • Adidas
    Not enough data

Return rate

How often is a product of this brand in the «Sports socks» category returned?

Source: Digitec Galaxus
  • 62.Rapha
    3.8 %
  • 64.Sealskinz
    4 %
  • 65.Castelli
    4.4 %
  • 66.Erima
    5 %
  • 67.Skinners
    5.1 %
Source: Digitec Galaxus