While my Smart Alec is a great backpack, its solid-black construction isn’t great for visibility when I’m on my bike.

This problem is easily solved, however. Tom Bihn has a Glowire kit for sale for the bag now. It’s $18, and is available in green, yellow and aqua.

The kit comes with a power pack (and two AA batteries!), and a 1.5 meter piece of GLowire that can easily been looped through the backpack. The power pack can pulse the light, or simply run it for up to 24 hours ona single set of batteries. It’s bright, and makes riding a bike with the bag much, much safer. Go check it out.