ASSOS EQUIPE ThermoBooster P1

**New ASSOS Fall/Winter 2026 Collection item

The ASSOS EQUIPE ThermoBooster P1 is a lightly insulated midlayer for racing and high-intensity cycling in cool conditions, engineered with ultrabreathable textiles and a second-skin, aerodynamic fit and updated to radically increase breathability. A versatile double-zip construction allows ventilation from either the top or bottom. UNISEX item.

ASSOS proteam WorldTour riders require the thinnest, lightest, most breathable layers to dial the perfect microclimate temperatures on race day. With light insulation and maximum breathability, the THERMOBOOSTER P1 fits the bill as a slight upgrade to midlayer thermoregulation, whether it’s race day or everyday training. The THERMOBOOSTER P1 combines a body of SENS Air Plus textile with sleeves of 575CX – the same aerodynamic textile used on ASSOS ultra-aero RS Shell Jersey S11. To boost versatility, the EQUIPE THERMOBOOSTER P1 includes a pair of ultralight mesh pockets, so it can also function as an outer layer in temperate conditions.

SPECIFICATIONS
Temperature +12 / >+21°C
Riding conditions Cool
Fit Racing
Breathability 5/5
Insulation 2/5
Quick drying 4/5
Packability 4/5
ASSOS CLIMACODE 2.3 SPRING/FALL - color code yellow

Technology overview | The finer details
FEATURED FABRICS
The main textile, SENS Air Plus, wraps your body in close-fitting, breathable comfort and UPF 50+. On the sleeves, 575CX is an insulating, breathable warp-knit textile that wraps your arms in supportive, second-skin compression.

CONSTRUCTION/FIT
ASSOS AEPD 11 racingFit is a second-skin, aerodynamic silhouette designed with WorldTour feedback to envelope the body in 360-degree compression and stability.

ENGINEERING
//ASSOS aeroScience: Combining thermoregulation and protection against the chill with pure racing aerodynamics. Full speed, no compromises.
//fastClosure: A double-zip construction that allows ventilation from top or bottom. An auto-alignment design guides the sliders into engagement for operation with gloves or in inclement weather conditions.
//Reflective Detailing: Reflective elements on the shoulders increase visibility in the low-light, overcast conditions when wind and rain protection are most valuable.