smith allure asian fit helmet Round Contour Snow in Matte Storm, Size Small : Sports & Outdoors Airflow climate control gives you ample vents to keep your head cool should you decide to head towards the backside for a quick bootpack Smith Optics Allure MIPS -

Shoei Neotec 3 Satori Modular Motorcycle Helmet Experience superior protection combined with versatile design in the Shoei Neotec 3 Satori Modular Motorcycle Helmet

And, even then, the sensation was never surprising or unmanageable

Zippers with Locking Latches or Clips This to me be is a very important feature for an anti theft bag for travel

Some brands like Light & Motion design their lights around mounting to handlebars instead of helmets and choose rubber straps to mount them, so they use a smaller tube base for the helmet to wrap the strap around, which works, but at the expense of putting the light much higher above your head where its more likely to grab low tree branches while also making it feel heavier bobbing back and forth