A gilet is one of the simplest ways to add visibility to an e-bike commute without committing to a full high-vis jacket, and the BTR 50-50 Hi Vis Reflective Gilet is built around that idea. One half of the fabric is fluorescent yellow for daytime visibility, the other half is silver reflective material that lights up under headlights and streetlighting after dark.
Because it's a gilet rather than a jacket, it layers easily over whatever else you're already wearing, whether that's a waterproof shell in winter or just a t-shirt in summer, which makes it one of the few pieces of kit that gets worn all year round rather than being packed away once the weather turns. A mesh lining and air vent across the back keep it from feeling like a stuffy extra layer, and elasticated trims at the arms and waist keep it in place while riding.
At under £30 it's a low-cost way to make a real difference to how visible you are to drivers on a dark or overcast ride, which matters more on an e-bike than a normal bicycle simply because higher assisted speeds close the gap between rider and traffic faster.