The proviz womens waterproof jacket is compatible with the unique usb rechargeable triviz light pack that is attachabledetachable in seconds simply remove the reflective booster triangle on the rear of the jacket and replace it with the triviz to ensure you are highly visible above the sea of red and white lights on the roads triviz light pack not included for raising your visibilty and awareness of other road users the proviz waterproof jacket is the perfect choice all the fe