The Real McCoy's Helmet Bag Sage€ 279.99
(outside EU, import tax not included)
The fighter pilots carried their helmets in these bag's using the same nylon as their bomber jackets. You can wear also your helmet, but also it can contain many other stuff, so it's never to late to have a cool tote.
H:43cm X L:47cm
Made in Japan
Inner Pocket & Shoulder strap