From Singletrackworld:

“Once you’ve finished riding/perspiring/wearing your helmet, you simply peel off the (now presumably sweat-replete) drybrow, and replace with another one when you’re ready to ride again. No more smelly bacterial buildups in your helmet! Win! They cost £6.99 for 10, and they are apparently also effective against goggle-fog.

What do you think? Good idea? Are you particularly sweaty? Feel free to vent in the comments! (see what we did there?). We imagine the advert might have someone on rollerskates, for some reason.”

Oh dear.