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Description
Fast, First. Sock, Always.
The Castelli Aero Race Pro 20 Sock is their version of an aero sock that doesn't compromise on the things that make a great sock. Working with expert Italian knitters and state-of-the-art machinery, they created a structure that combines smooth and textured zones to control airflow and reduce drag — without sacrificing comfort or fit. The result is a sock that stays up, feels great, and delivers aero performance equal to ribbed Lycra cuffs — with the bonus of true everyday wearability.
Features:
- Traditional sock comfort with raised aero ribs.
- Developed to provide everyday aerodynamic gains.
- Durable and breathable construction.
- 90% polyamide / 10% elastane mix for optimal comfort and fit.
- 20 cm cuff.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Size Chart
| S/M | L/XL | XXL | ||||
| Shoe Size | 35-39 | 40-43 | 44-47 |
Specifications
White - S/M | Mfg PartNum: R4526031001-2 |
White - L/XL | Mfg PartNum: R4526031001-4 |
White - 2X-Large | Mfg PartNum: R4526031001-6 |
Black - S/M | Mfg PartNum: R4526031010-2 |
Black - L/XL | Mfg PartNum: R4526031010-4 |
Black - 2X-Large | Mfg PartNum: R4526031010-6 |
Belgian Blue - S/M | Mfg PartNum: R4526031424-2 |
Belgian Blue - L/XL | Mfg PartNum: R4526031424-4 |
Belgian Blue - 2X-Large | Mfg PartNum: R4526031424-6 |



















