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Description
Cool Outer Layer, Colder Mid-Layer,
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.
Assos' WorldTour riders demand 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 combines a body of the SENS Air Plus textile with sleeves of 575CX – the same aerodynamics textile used on the ultra-aero RS Shell Jersey S11. To boost versatility, the EQUIPE THERMOBOOSTER P1 includes a pair of ultralight mesh pockets, so it also functions as an outer layer in milder temperate conditions.
Features:
- Featured Fabrics: The main textile, SENS Air Plus, wraps the body in close-fitting, breathable comfort and UPF 50+. On the sleeves, 575CX is an insulating, breathable warp-knit textile that wraps the arms in supportive, second-skin compression.
- Construction/Fit: The AEPD 11 racingFit is a second-skin, aerodynamic silhouette designed with WorldTour feedback to envelope the body in 360-degree compression and stability.
- ASSOS aeroScience: Combining thermoregulation and protection against the chill with pure racing aerodynamics.
- 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 low-light, overcast conditions when wind and rain protection are most valuable.
- Composition: Main fabric: 76% polyamide, 24% elastane / Sleeve: 80% polyamide, 20% elastane / Back/pocket/hem insert: 70% polyamide, 30% elastane
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Size Chart
| XS | S | M | L | XL | XLG | |
| Chest | 33"-36" | 36"-38" | 38"-39" | 39"-40" | 40"-43" | 43"-46" |
| Body Weight | 0 lbs | 0 lbs | 0 lbs | 0 lbs | 0 lbs | 0 lbs |
Specifications
Kosimo Granit - X-Small | Mfg PartNum: 13.24.453.1C.XS |
Kosimo Granit - Small | Mfg PartNum: 13.24.453.1C.S |
Kosimo Granit - Medium | Mfg PartNum: 13.24.453.1C.M |
Kosimo Granit - Large | Mfg PartNum: 13.24.453.1C.L |
Kosimo Granit - X-Large | Mfg PartNum: 13.24.453.1C.XL |
Kosimo Granit - 2X-Large | Mfg PartNum: 13.24.453.1C.2XL |



















