I crafted it from a meter or two of Conspicuity Tape and an Xacto knife. The white around the top and bottom is ripped off of a safety vest I found in the road. It's been probably 3 years now, the tape has adhered very well, no peeling at all, even though there are some sharp corners on there. And it's very reflective. Every time I drive into the garage at night, my headlights really light it up and I feel reassured that drivers can see me really well.