Note about preorder items - Order now online to reserve yours today.  While some items in certain sizes aren't normally stocked, they can be purchased in advance for the soonest possible delivery from the factory.
 
Snap cap pro 311
The B+W Snap-Cap Pro 311 is a lens cap with two spring-loaded plastic claws that click into the filter thread. This ensures that the cover sits firmly and securely without any time-consuming screwing and unscrewing. The claws can be operated from the side as well as from above. The cap can therefore be fitted and removed through a lens hood, as long its barrel is not too long.