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Assos Endurance ThermoBooster Base Layer

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Attributes
ColourBlack Series
Suitable forEveryone
In-stock items ordered before 2pm are dispatched the same day. Free delivery over £50.
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About Assos

Assos

At the Assos Competence Centre in Ticino, Switzerland, members of the R&D Laboratory share over 350 years of expertise in cycling apparel. Assos use performance-oriented fabrics to construct highly technical garments that are made for true cycling.

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Details

A midweight layer that unlocks year-round thermoregulation with adaptable layering, updated with a simplified structure to unlock universal utility - one textile, one zipper, total versatility.

Midweight insulation can provide year-round comfort - if it's engineered correctly. For cool conditions or long alpine descents in the summer, the ThermoBooster P1 layers over a standard jersey for additional warmth. In wet conditions, it insulates the microclimate beneath a rain shell. For extremely cold and wet conditions, it layers beneath a winter jacket for thermoregulation equal to the deepest winter conditions.

Technology

Featured Fabrics

RX textile is Assos' most versatile Roubaix-style thermoregulator. It provides soft, midweight insulation with a highly elastic, low-volume structure ideal for layering.

Construction/Fit

Assos' streamlined regularFit and body-contoured shaping reduce seams, eliminating friction for total comfort and easy layering.

Engineering

Raw Cut: Race-inspired construction that eliminates hems and ridges for clean lines, boosted aerodynamics, and low-volume layering.

Specification
  • Composition: Main Fabric 85%Polyamide 15%Elastane
  • Temperature: -8 / +20°C
  • Fit: Regular
  • Riding Conditions: Cold
  • Sustainability: OEKO-TEX Textiles / PFAS Free