lens cap for EX3

[Shimobe]

anybody recommend a lens cap to protect the EX3 a Mattebox is being used all the time. I don't really want to have to take off the mattebox and then put on the other mattebox every time... any suggestions??

ps. it would be with or without the UV filter on the front...if that makes a difference.

[JDDalllas]

http://www.bhphotovideo.com/c/product/271695-REG/Century_Precision_Optics_0DS_MBLC_00_DS_MBLC_00_Ma tte_Box_Lens.html

[jujufactory]

Look like a condom. :)

[Shimobe]

I know i should have specified... will that fit over the Redrock mattebox??