BMW Genuine Motorcycle Boulder 2 jacket - size XL BMW Genuine Boulder 2 jacket Boulder jacket The multifunctional genius. BMW Motorrad's Boulder jacket is a master of the art of metamorphosis. It is a vest, an air-permeable summer jacket and thanks to a removable Venturi climate insert it is also waterproof, windproof and breathable. Truly a jacket for all occasions. Cordura 500 with breathable coating -- Breathable, waterproof and windproof thanks to removable C.A.R.E. climate membrane insert -- Ventilator zips -- NP protectors for shoulders, elbows and back -- Removable sleeves mean it can also be worn as a bodywarmer -- Four exterior pockets and one waterproof interior pocket -- Reflective material on back and sleeves -- Adjustable waist and cuffs -- Connector zip (40 cm)