

The Assos Men's ThermoBooster Midlayer is 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 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.
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.
| 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 |
Sleeve Type: Long Sleeve | |
Black Series - Small | Mfg PartNum: 11.24.417.18.S |
Black Series - Medium | Mfg PartNum: 11.24.417.18.M |
Black Series - Large | Mfg PartNum: 11.24.417.18.L |
Black Series - X-Large | Mfg PartNum: 11.24.417.18.XL |

