Assos RSR Bolide Booties S11 2026

The RSR BOLIDE Booties S11 represent the pinnacle of Assos’ aerodynamic development, designed to deliver the maximum performance gain permitted by the UCI. Developed and validated through the ASSOS AeroScience programme, they are intended exclusively for race days, when performance takes precedence over all other considerations.

The second-skin construction combines a low-drag fabric around the ankle, optimised to channel airflow and reduce turbulence, with an ultra-snug foot section that fits the shoe perfectly. This aerodynamic continuity creates a seamless transition between the leg, the sock and the shoe, where air resistance is usually highest.

Compliant with UCI regulations, the RSR BOLIDE Booties S11 are designed to be worn with low-profile socks. To ensure perfect stability and maintain aerodynamic gains at high speeds, the use of an adhesive spray under the hem is recommended, particularly in hot and humid conditions.

Technical specifications:

- Model: RSR BOLIDE Booties S11
- Colour: White Series
- Sizes: 35-38, 39-42, 43-46
- Use: Road racing / time trial
- Certification: UCI
- Fit: racing (second-skin)
- Composition:
- Foot: 90% polyamide, 10% elastane
- Ankle: 56% Polyester, 24% Polyamide, 20% Elastane
- Conditions: Warm weather (> +21°C)
- Maximum aerodynamics validated in the WorldTour
- Low-drag fabrics developed in a wind tunnel
- Ultra-snug second-skin construction
- High breathability despite the performance focus
- Designed exclusively for race days

Assos size guide