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Thermal insulation with minimal bulk
The Thermobooster p1 is designed to be worn over a jersey and under a jacket. Compared with previous generations, this model is said to be lighter and have a smaller pack size. This means it can easily be stowed away in a jersey pocket when temperatures rise.
Assos uses Hyperlight insulation for thermal protection. The material is designed to prevent the body from getting cold without restricting freedom of movement or compromising the close-fitting design of the Equipe range. The insulation is complemented by Sens-Air-Plus fabric, which is designed to offer all-round protection and breathability.
Aerodynamic fit for training and competition
A key feature of the Thermobooster p1 is its close-fitting design. The sleeves, made from 575cx fabric, fit snugly against the body and are designed to sit neatly over a cycling jersey. This ensures a smooth silhouette, whilst the additional layer of clothing creates as little air resistance as possible.
A two-way zip allows you to adjust ventilation whilst cycling. At the same time, it makes it easier to access the pockets underneath. Reflective elements are designed to improve visibility in low-light conditions. The new Assos A logo adds a subtle visual touch.
Full details on the Thermobooster p1
- A lighter and more compact version of the Thermobooster
- Hyperlight insulation for extra warmth whilst keeping the weight down
- High breathability for varying levels of exertion
- A close-fitting, aerodynamic design for wearing over a jersey
- Two-way zip for regulating ventilation
- Reflective details for greater visibility
The Thermobooster p1 has been available since August 2026, for example available here. The unisex version in Kosimo Granite costs 200 euros.
Matthias Borchers
Editor
