I got a Fibre Flare "shorty" in the yellow color to try out for side visibility. These are currently listing for about $27 on Amazon.com. At the LBS, we'd probably sell it for $37.98.
Package contents (besides the light itself)
The rubber covers at each end peel back for battery installation. The grey button there is the ON/OFF button. The rubber covers should provide modest water resistance, but I wouldn't expect miracles.
The metal catch flips up for a AAA cell at each end. The + terminal points outwards at both ends.
The rubber straps are nice soft silcone rubber. They slide over the light's clothing clips.
And here are a few photos of the light on the bike. It's surprisingly bright.
And a quick indoor video clip: