full face dot motorcycle helmet 1Storm for Adults Men and Women Street Bike Racing Helmet Approved with one Extra Clear Shield: KT828 Tinted Visor our full face motorcycle helmet provides unmatched protection for riders Motorcycle Helmet | DOT |

Thousand Heritage Bike Helmet Stylish retro-looking commuter helmet MSRP: $89 The Heritage by Thousand Helmets is a throwback retro bike helmet that includes all of the modern safety features

Ellis Brigham is where I buy almost all of mine

But the main attraction is how many ways you can wear this bag, three to be exact, as a tote, backpack, or crossbody

I was not too concerned since I have six spare units

However, if you can find a good waterproof wheeled backpack, thats a great feature to have because itll be more durable in any kind of weather

Sounds like a job for a microcontroller integrated with some solid hardware.