The J1WB-E is a lightweight shell jacket produced in a technical nylon material that is water-repellent and windproof. Cut for a wide fit, the garment is then outfitted with a storm hood, standing collar, and front zip fastening, all while being detailed with spike tape and logo tape. As with many ACRONYM garments, the piece is compatible with a series of the brand's subsystems including ForceLock, JacketSling, EscapeZip, SpeedLock, Gravity Pocket, and AuxZip.