Called the LEDwear LED Rucksack Cover in the UK, the rear of the backpack cover features a hexagon-plus-one arrangement of LEDs.
These are the same type used on the LEDwear Aurora jacket and they are also embedded into the backpack cover material rather than added on to a separate section of fabric.
The LEDs cycle through the same light sequence as the Aurora jacket shown in the video in that review: a fast on/off…on/off “Police/Emergency” style blinking to a steady on/off blinking to always-on light to completely off.
The LEDs on the backpack cover are red only, and the switch is mounted just below the material on the lower portion of the cover.
It’s a membrane-type switch that is squeezed to cycle the lights through the different modes.
Even with the Road Sack backpack stuffed full, I could easily reach around and manipulate the switch, although I can’t tell which mode the lights are in unless I back up against something that allows me to see the reflection.
It would probably be nice to have some type of over-the-shoulder cable with a remote membrane switch attached.
Also, maybe even a tiny LED light on the remote so the rider would know whether the LEDs were on, off or blinking.
It may be illegal in some states and countries to ride with blinking lights, so it is important to be able to cycle through the light sequences when necessary.
For normal riding at night or during hours of low visibility, the LEDs should probably be switched to the continuously on mode for best visibility.
In heavy fog or if traffic is stopped for some reason and visibility is poor or ambient light is limited (e.g., dawn and dusk), it might be a good idea to use one of the blinking light modes for best visibility.
But again, the key here is for the rider to be able to quickly and accurately switch back and forth among modes.
Of course, the high-visibility lime yellow fabric offers the potential of increased visibility during the day, and the vertical retro-reflective strips are highly visible at night when they’re illuminated by headlights, as you can see in the photo below.
This, combined with the bright LED light capability, provides a “3 Way” package of visibility for backpack-carrying motorcyclists.
Also, although LEDwear doesn’t make any claims regarding the waterproofing ability of the cover, it does provide extra protection in this regard and seems completely water resistant, at least where it covers the backpack; an added bonus.