Oxford Lid Locker Lockable Helmet Bag Secure way to leave your helmet with your bike, and keep it Suitable for chains and cable locks Handy Velcro hanging strap to keep your helmet off the wet ground Lock not included Suitable locks include: Oxford Monster, Oxford Patriot, Oxford Hardcore, Oxford Barrier & Barrier Chainlock, Oxford HD chain lock, Oxford Combi Chain 10, Oxford Revolver, Oxford Tripwire, Oxford loop, Oxford Lock Mate & Lock Mate Junior.