Rear-view mirror for biking--mounts on any bike helmet Kraton covered wire allows for full flexibility Large oval shape and vertical aspect for an extra wide angle view Base adheres permanently; mirror detaches easily Weighs just 0.7 ounces (21.8 grams) With this bicycle mirror you'll always know what's behind you. Kraton covered wire (think Gumby) makes this mirror flexible and fully adjustable Base permanently adheres to helmet Mirror can be detached via ball-and-socket Cycle aware Reflex Bicycle Helmet Mirror
very basic, but still my favorite mirror - its not too big, not too obvious, yet gives plenty of good viewing. it snaps on and off my helmet -I keep thebase attached to the helmet with the sticky pad it came with - after wind and rain and bumps, the base has never come off. i remove the arm after riding because i have it bent exactly how i like it, and if i left it on the helmet it would get bumped around and the position would get changed....this way I dont nee..