The Lightning Vest is one of the coolest bike accessories I have seen in a while! It is a hand-netted, highly visible safety vest made from a custom developed 3M reflective material. It can be worn all year, day or night and layered over jackets or t-shirts. Neck opening is wide enough to pass over your helmet and netting is large enough for your hand to access your pockets. It is lightweight and compact enough to fit in your pocket without ever getting tangled. Brilliant? YES!