RSR 2/3 Speed Booties

RSR 2/3 Speed Booties

The Assos RSR 2/3 Speed Booties are the aerodynamic upgrade for cool transitional days on the road bike – with light insulation and water-repellent properties. Assos takes the streamlined fit of the summer model and enhances it with materials that save weight and smooth the surface. Key features are the Cordura toe cap for robust weather protection and the elastic Sonic-SN material at heel and ankle, which Assos derives from the RS Spring Fall Jacket. The raw-cut, low cuff sits cleanly under tights or leg warmers and is held by a light silicone application, while the zipperless construction minimizes volume. The shoe cover is available in the Assos sizing system from 0 to III for a precise, second-skin fit.

• Aerodynamic shaping based on the summer RSR model for less air turbulence around straps, BOA dials and buckles.
• Cordura toe area: forms a protective, insulating shell and barely adds bulk.
• Sonic-SN at heel/ankle: breathable insulation with high elasticity, inspired by the RS Spring Fall Jacket.
• Zipperless and panel-mapped for a zeroPressure fit without chafing or unnecessary volume.
• Raw-cut finish with light silicone coating: sits securely under tights/leg warmers without slipping.
• Material composition: Ankle area 84% polyamide / 16% elastane; Front section 80% polyamide / 20% elastane.
• Two variants in the range: RSR Speed Booties (1/3 summer) and RSR 2/3 Speed Booties (spring-autumn).

Technical Details and Functions

In the forefoot, Assos uses Cordura, which forms a smooth, durable and water-repellent layer – ideal when road spray or cool headwind hits the toes. Heel and ankle are covered with Sonic-SN, a ribbed, highly elastic fabric with light thermal effect that wraps tightly and wrinkle-free around the shoe. The zipperless construction reduces components, weight and potential weak points and supports the second-skin fit. At the shaft, a raw-cut cuff with fine silicone application ensures slip-free fit without pressure under long pants. The selected fabrics bring the balance of light insulation, breathability and aerodynamics that Assos defines for 2/3 conditions. Combined, this creates a setup that offers protection without affecting cadence or ride feel.

Applications and Benefits

The RSR 2/3 Speed Booties show their strengths on fast training rides, commutes and races during Swiss transitional seasons. When the morning is cool, the roads are wet and you still want to roll efficiently, they deliver aerodynamic smoothness and noticeably more comfort. Under tights, the raw-cut finishes virtually disappear, and the low volume prevents contact with the crank arm. Compared to traditionally thick neoprene covers, these booties feel noticeably lighter while still keeping shoes clean. Independent lab tests also show that clothing and accessory choices measurably influence aerodynamics – exactly where Assos targets with its RSR shaping. This way you gain a few free watts in typical spring/autumn conditions in Switzerland, without having to dress as warmly as in winter.

For sizing, follow the Assos scheme 0 to III; the elastic construction makes putting them on easier and ensures a stable, compressive fit while riding. If you're looking for a summer counterpart for dry, mild days, the slimmer RSR Speed Booties variant is the perfect complement, while the RSR 2/3 Speed Booties shown here specifically provide more protection for spring and autumn. The material choice with Cordura is designed for durability, which is particularly important for shoe covers in exposed areas like the toe cap. Overall, you cover two areas of use and can combine flexibly depending on the ride, weather and intensity.