Wouldn't those magnets be a potential issue for any credit cards you might want to put in your handlebar bag? He mentioned they were rare earth, which are pretty strong. Strong magnetic fields are unfriendly to the magnetic strips on credit cards, and the internal zip pocket inside the bag is right under where he has the magnets set up. And even if the position inside the bag is far enough away to not be an issue, you'd have to be careful whenever you take your wallet out of the bag, just passing it close to those magnets could wipe your cards. Or am I way overthinking this?